diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 0f83ac463..22c1a476b 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -22,7 +22,7 @@ jobs:
 
       - uses: actions/setup-node@v1
         with:
-          node-version: '14.14.0'
+          node-version: '16.13.0'
 
       - name: Install dependencies
         working-directory: extensions/ql-vscode
@@ -82,7 +82,7 @@ jobs:
 
       - uses: actions/setup-node@v1
         with:
-          node-version: '14.14.0'
+          node-version: '16.13.0'
 
       - name: Install dependencies
         working-directory: extensions/ql-vscode
@@ -147,7 +147,7 @@ jobs:
 
       - uses: actions/setup-node@v1
         with:
-          node-version: '14.14.0'
+          node-version: '16.13.0'
 
       - name: Install dependencies
         working-directory: extensions/ql-vscode
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 05f57aac3..9b084159a 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -22,7 +22,7 @@ jobs:
 
       - uses: actions/setup-node@v1
         with:
-          node-version: '10.18.1'
+          node-version: '16.13.0'
 
       - name: Install dependencies
         run: |
diff --git a/extensions/ql-vscode/package-lock.json b/extensions/ql-vscode/package-lock.json
index 159520313..94f03dd32 100644
--- a/extensions/ql-vscode/package-lock.json
+++ b/extensions/ql-vscode/package-lock.json
@@ -14,6 +14,8 @@
         "@primer/react": "^34.3.0",
         "child-process-promise": "^2.2.1",
         "classnames": "~2.2.6",
+        "d3": "^6.3.1",
+        "d3-graphviz": "^2.6.1",
         "fs-extra": "^9.0.1",
         "glob-promise": "^3.4.0",
         "js-yaml": "^3.14.0",
@@ -44,6 +46,8 @@
         "@types/chai-as-promised": "~7.1.2",
         "@types/child-process-promise": "^2.2.1",
         "@types/classnames": "~2.2.9",
+        "@types/d3": "^6.2.0",
+        "@types/d3-graphviz": "^2.6.6",
         "@types/del": "^4.0.0",
         "@types/fs-extra": "^9.0.6",
         "@types/glob": "^7.1.1",
@@ -932,6 +936,310 @@
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       "dev": true
     },
+    "node_modules/@types/d3": {
+      "version": "6.7.5",
+      "resolved": "https://registry.npmjs.org/@types/d3/-/d3-6.7.5.tgz",
+      "integrity": "sha512-TUZ6zuT/KIvbHSv81kwAiO5gG5aTuoiLGnWR/KxHJ15Idy/xmGUXaaF5zMG+UMIsndcGlSHTmrvwRgdvZlNKaA==",
+      "dev": true,
+      "dependencies": {
+        "@types/d3-array": "^2",
+        "@types/d3-axis": "^2",
+        "@types/d3-brush": "^2",
+        "@types/d3-chord": "^2",
+        "@types/d3-color": "^2",
+        "@types/d3-contour": "^2",
+        "@types/d3-delaunay": "^5",
+        "@types/d3-dispatch": "^2",
+        "@types/d3-drag": "^2",
+        "@types/d3-dsv": "^2",
+        "@types/d3-ease": "^2",
+        "@types/d3-fetch": "^2",
+        "@types/d3-force": "^2",
+        "@types/d3-format": "^2",
+        "@types/d3-geo": "^2",
+        "@types/d3-hierarchy": "^2",
+        "@types/d3-interpolate": "^2",
+        "@types/d3-path": "^2",
+        "@types/d3-polygon": "^2",
+        "@types/d3-quadtree": "^2",
+        "@types/d3-random": "^2",
+        "@types/d3-scale": "^3",
+        "@types/d3-scale-chromatic": "^2",
+        "@types/d3-selection": "^2",
+        "@types/d3-shape": "^2",
+        "@types/d3-time": "^2",
+        "@types/d3-time-format": "^3",
+        "@types/d3-timer": "^2",
+        "@types/d3-transition": "^2",
+        "@types/d3-zoom": "^2"
+      }
+    },
+    "node_modules/@types/d3-array": {
+      "version": "2.12.3",
+      "resolved": "https://registry.npmjs.org/@types/d3-array/-/d3-array-2.12.3.tgz",
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+      "dev": true
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+    "node_modules/@types/d3-transition": {
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/@types/d3-transition/-/d3-transition-2.0.2.tgz",
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+      "dev": true,
+      "dependencies": {
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+    "node_modules/@types/d3-zoom": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/@types/d3-zoom/-/d3-zoom-2.0.3.tgz",
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+        "@types/d3-selection": "^2"
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     "node_modules/@types/del": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/@types/del/-/del-4.0.0.tgz",
@@ -983,6 +1291,12 @@
         "@types/node": "*"
       }
     },
+    "node_modules/@types/geojson": {
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-        "color-name": {
-          "version": "1.1.4",
-          "resolved": "https://registry.npmjs.org/color-name/-/color-name-1.1.4.tgz",
-          "integrity": "sha512-dOy+3AuW3a2wNbZHIuMZpTcgjGuLU/uBL/ubcZF9OXbDo8ff4O8yVp5Bf0efS8uEoYo5q4Fx7dY9OgQGXgAsQA==",
-          "dev": true
-        },
         "has-flag": {
           "version": "4.0.0",
           "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-4.0.0.tgz",
@@ -19254,21 +19982,6 @@
           "integrity": "sha512-Z7tMw1ytTXt5jqMcOP+OQteU1VuNK9Y02uuJtKQ1Sv69jXQKKg5cibLwGJow8yzZP+eAc18EmLGPal0bp36rvQ==",
           "dev": true
         },
-        "color-convert": {
-          "version": "2.0.1",
-          "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-2.0.1.tgz",
-          "integrity": "sha512-RRECPsj7iu/xb5oKYcsFHSppFNnsj/52OVTRKb4zP5onXwVF3zVmmToNcOfGC+CRDpfK/U584fMg38ZHCaElKQ==",
-          "dev": true,
-          "requires": {
-            "color-name": "~1.1.4"
-          }
-        },
-        "color-name": {
-          "version": "1.1.4",
-          "resolved": "https://registry.npmjs.org/color-name/-/color-name-1.1.4.tgz",
-          "integrity": "sha512-dOy+3AuW3a2wNbZHIuMZpTcgjGuLU/uBL/ubcZF9OXbDo8ff4O8yVp5Bf0efS8uEoYo5q4Fx7dY9OgQGXgAsQA==",
-          "dev": true
-        },
         "slice-ansi": {
           "version": "4.0.0",
           "resolved": "https://registry.npmjs.org/slice-ansi/-/slice-ansi-4.0.0.tgz",
@@ -19280,15 +19993,6 @@
             "is-fullwidth-code-point": "^3.0.0"
           }
         },
-        "strip-ansi": {
-          "version": "6.0.1",
-          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-6.0.1.tgz",
-          "integrity": "sha512-Y38VPSHcqkFrCpFnQ9vuSXmquuv5oXOKpGeT6aGrr3o3Gc9AlVa6JBfUSOCnbxGGZF+/0ooI7KrPuUSztUdU5A==",
-          "dev": true,
-          "requires": {
-            "ansi-regex": "^5.0.1"
-          }
-        },
         "wrap-ansi": {
           "version": "6.2.0",
           "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-6.2.0.tgz",
@@ -19765,15 +20469,6 @@
             "argparse": "^2.0.1"
           }
         },
-        "locate-path": {
-          "version": "6.0.0",
-          "resolved": "https://registry.npmjs.org/locate-path/-/locate-path-6.0.0.tgz",
-          "integrity": "sha512-iPZK6eYjbxRu3uB4/WZ3EsEIMJFMqAoopl3R+zuq0UjcAm/MO6KCweDgPfP3elTztoKP3KtnVHxTn2NHBSDVUw==",
-          "dev": true,
-          "requires": {
-            "p-locate": "^5.0.0"
-          }
-        },
         "ms": {
           "version": "2.1.3",
           "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.3.tgz",
@@ -19786,24 +20481,6 @@
           "integrity": "sha512-rdwtIXaXCLFAQbnfqDRnI6jaRHp9fTcYBjtFKE8eezcZ7LuLjhUaQGNeMXf1HmRoCH32CLz6XwX0TtxEOS/A3Q==",
           "dev": true
         },
-        "p-limit": {
-          "version": "3.1.0",
-          "resolved": "https://registry.npmjs.org/p-limit/-/p-limit-3.1.0.tgz",
-          "integrity": "sha512-TYOanM3wGwNGsZN2cVTYPArw454xnXj5qmWF1bEoAc4+cU/ol7GVh7odevjp1FNHduHc3KZMcFduxU5Xc6uJRQ==",
-          "dev": true,
-          "requires": {
-            "yocto-queue": "^0.1.0"
-          }
-        },
-        "p-locate": {
-          "version": "5.0.0",
-          "resolved": "https://registry.npmjs.org/p-locate/-/p-locate-5.0.0.tgz",
-          "integrity": "sha512-LaNjtRWUBY++zB5nE/NwcaoMylSPk+S+ZHNB1TzdbMJMny6dynpAGt7X/tl/QYq3TIeE6nxHppbo2LGymrG5Pw==",
-          "dev": true,
-          "requires": {
-            "p-limit": "^3.0.2"
-          }
-        },
         "path-exists": {
           "version": "4.0.0",
           "resolved": "https://registry.npmjs.org/path-exists/-/path-exists-4.0.0.tgz",
@@ -19902,8 +20579,7 @@
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/mocha-sinon/-/mocha-sinon-2.1.2.tgz",
       "integrity": "sha512-j6eIQGgOFddcgE1kUFKSvXR9oCuSEiRzv2XUK4iJcntObi2X2vYDvRwvOWxECUZl2dJ+Ciex5fYYni05Lx4azA==",
-      "dev": true,
-      "requires": {}
+      "dev": true
     },
     "module-not-found-error": {
       "version": "1.0.1",
@@ -21204,6 +21880,11 @@
         "queue-microtask": "^1.2.2"
       }
     },
+    "rw": {
+      "version": "1.3.3",
+      "resolved": "https://registry.npmjs.org/rw/-/rw-1.3.3.tgz",
+      "integrity": "sha1-P4Yt+pGrdmsUiF700BEkv9oHT7Q="
+    },
     "rxjs": {
       "version": "6.6.0",
       "resolved": "https://registry.npmjs.org/rxjs/-/rxjs-6.6.0.tgz",
@@ -21230,8 +21911,7 @@
     "safer-buffer": {
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/safer-buffer/-/safer-buffer-2.1.2.tgz",
-      "integrity": "sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg==",
-      "dev": true
+      "integrity": "sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg=="
     },
     "scheduler": {
       "version": "0.20.2",
@@ -21439,8 +22119,7 @@
       "version": "3.5.0",
       "resolved": "https://registry.npmjs.org/sinon-chai/-/sinon-chai-3.5.0.tgz",
       "integrity": "sha512-IifbusYiQBpUxxFJkR3wTU68xzBN0+bxCScEaKMjBvAQERg6FnTTc1F17rseLb1tjmkJ23730AXpFI0c47FgAg==",
-      "dev": true,
-      "requires": {}
+      "dev": true
     },
     "slash": {
       "version": "3.0.0",
@@ -22535,8 +23214,7 @@
       "dev": true
     },
     "undertaker": {
-      "version": "1.2.1",
-      "resolved": "https://registry.npmjs.org/undertaker/-/undertaker-1.2.1.tgz",
+      "version": "https://registry.npmjs.org/undertaker/-/undertaker-1.2.1.tgz",
       "integrity": "sha512-71WxIzDkgYk9ZS+spIB8iZXchFhAdEo2YU8xYqBYJ39DIUIqziK78ftm26eecoIY49X0J2MLhG4hr18Yp6/CMA==",
       "dev": true,
       "requires": {
@@ -22798,6 +23476,11 @@
         }
       }
     },
+    "viz.js": {
+      "version": "1.8.2",
+      "resolved": "https://registry.npmjs.org/viz.js/-/viz.js-1.8.2.tgz",
+      "integrity": "sha512-W+1+N/hdzLpQZEcvz79n2IgUE9pfx6JLdHh3Kh8RGvLL8P1LdJVQmi2OsDcLdY4QVID4OUy+FPelyerX0nJxIQ=="
+    },
     "vsce": {
       "version": "1.88.0",
       "resolved": "https://registry.npmjs.org/vsce/-/vsce-1.88.0.tgz",
@@ -22879,8 +23562,7 @@
         "diagnostic-channel-publishers": {
           "version": "0.3.5",
           "resolved": "https://registry.npmjs.org/diagnostic-channel-publishers/-/diagnostic-channel-publishers-0.3.5.tgz",
-          "integrity": "sha512-AOIjw4T7Nxl0G2BoBPhkQ6i7T4bUd9+xvdYizwvG7vVAM1dvr+SDrcUudlmzwH0kbEwdR2V1EcnKT0wAeYLQNQ==",
-          "requires": {}
+          "integrity": "sha512-AOIjw4T7Nxl0G2BoBPhkQ6i7T4bUd9+xvdYizwvG7vVAM1dvr+SDrcUudlmzwH0kbEwdR2V1EcnKT0wAeYLQNQ=="
         },
         "semver": {
           "version": "5.7.1",
@@ -23243,15 +23925,6 @@
           "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8=",
           "dev": true
         },
-        "is-fullwidth-code-point": {
-          "version": "1.0.0",
-          "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-1.0.0.tgz",
-          "integrity": "sha1-754xOG8DGn8NZDr4L95QxFfvAMs=",
-          "dev": true,
-          "requires": {
-            "number-is-nan": "^1.0.0"
-          }
-        },
         "string-width": {
           "version": "1.0.2",
           "resolved": "https://registry.npmjs.org/string-width/-/string-width-1.0.2.tgz",
diff --git a/extensions/ql-vscode/package.json b/extensions/ql-vscode/package.json
index 39c741477..f4dfcba2e 100644
--- a/extensions/ql-vscode/package.json
+++ b/extensions/ql-vscode/package.json
@@ -48,6 +48,7 @@
     "onCommand:codeQLDatabases.chooseDatabaseLgtm",
     "onCommand:codeQL.setCurrentDatabase",
     "onCommand:codeQL.viewAst",
+    "onCommand:codeQL.viewCfg",
     "onCommand:codeQL.openReferencedFile",
     "onCommand:codeQL.previewQueryHelp",
     "onCommand:codeQL.chooseDatabaseFolder",
@@ -374,6 +375,10 @@
         "command": "codeQL.viewAst",
         "title": "CodeQL: View AST"
       },
+      {
+        "command": "codeQL.viewCfg",
+        "title": "CodeQL: View CFG"
+      },
       {
         "command": "codeQL.upgradeCurrentDatabase",
         "title": "CodeQL: Upgrade Current Database"
@@ -743,6 +748,11 @@
           "group": "9_qlCommands",
           "when": "resourceScheme == codeql-zip-archive && !explorerResourceIsFolder && !listMultiSelection"
         },
+        {
+          "command": "codeQL.viewCfg",
+          "group": "9_qlCommands",
+          "when": "resourceScheme == codeql-zip-archive && config.codeQL.canary"
+        },
         {
           "command": "codeQL.runQueries",
           "group": "9_qlCommands",
@@ -804,6 +814,10 @@
           "command": "codeQL.viewAst",
           "when": "resourceScheme == codeql-zip-archive"
         },
+        {
+          "command": "codeQL.viewCfg",
+          "when": "resourceScheme == codeql-zip-archive && config.codeQL.canary"
+        },
         {
           "command": "codeQLDatabases.setCurrentDatabase",
           "when": "false"
@@ -950,6 +964,10 @@
           "command": "codeQL.viewAst",
           "when": "resourceScheme == codeql-zip-archive"
         },
+        {
+          "command": "codeQL.viewCfg",
+          "when": "resourceScheme == codeql-zip-archive && config.codeQL.canary"
+        },
         {
           "command": "codeQL.quickEval",
           "when": "editorLangId == ql"
@@ -1023,6 +1041,8 @@
     "@primer/react": "^34.3.0",
     "child-process-promise": "^2.2.1",
     "classnames": "~2.2.6",
+    "d3": "^6.3.1",
+    "d3-graphviz": "^2.6.1",
     "fs-extra": "^9.0.1",
     "glob-promise": "^3.4.0",
     "js-yaml": "^3.14.0",
@@ -1054,6 +1074,8 @@
     "@types/child-process-promise": "^2.2.1",
     "@types/classnames": "~2.2.9",
     "@types/del": "^4.0.0",
+    "@types/d3": "^6.2.0",
+    "@types/d3-graphviz": "^2.6.6",
     "@types/fs-extra": "^9.0.6",
     "@types/glob": "^7.1.1",
     "@types/google-protobuf": "^3.2.7",
diff --git a/extensions/ql-vscode/src/additional-typings.d.ts b/extensions/ql-vscode/src/additional-typings.d.ts
new file mode 100644
index 000000000..d5a10a5f0
--- /dev/null
+++ b/extensions/ql-vscode/src/additional-typings.d.ts
@@ -0,0 +1,15 @@
+/**
+ * The d3 library is designed to work in both the browser and
+ * node. Consequently their typings files refer to both node
+ * types like `Buffer` (which don't exist in the browser), and browser
+ * types like `Blob` (which don't exist in node). Instead of sticking
+ * all of `dom` in `compilerOptions.lib`, it suffices just to put in a
+ * stub definition of the affected types so that compilation
+ * succeeds.
+ */
+
+declare type RequestInit = Record<string, unknown>;
+declare type ElementTagNameMap = any;
+declare type NodeListOf<T> = Record<string, T>;
+declare type Node = Record<string, unknown>;
+declare type XMLDocument = Record<string, unknown>;
diff --git a/extensions/ql-vscode/src/cli.ts b/extensions/ql-vscode/src/cli.ts
index 8e8187467..965108bd0 100644
--- a/extensions/ql-vscode/src/cli.ts
+++ b/extensions/ql-vscode/src/cli.ts
@@ -1,5 +1,6 @@
 import * as cpp from 'child-process-promise';
 import * as child_process from 'child_process';
+import * as fs from 'fs-extra';
 import * as path from 'path';
 import * as sarif from 'sarif';
 import { SemVer } from 'semver';
@@ -17,7 +18,7 @@ import { QueryMetadata, SortDirection } from './pure/interface-types';
 import { Logger, ProgressReporter } from './logging';
 import { CompilationMessage } from './pure/messages';
 import { sarifParser } from './sarif-parser';
-import { dbSchemeToLanguage } from './helpers';
+import { dbSchemeToLanguage, walkDirectory } from './helpers';
 
 /**
  * The version of the SARIF format that we are using.
@@ -687,20 +688,13 @@ export class CodeQLCliServer implements Disposable {
     return await this.runJsonCodeQlCliCommand<DecodedBqrsChunk>(['bqrs', 'decode'], subcommandArgs, 'Reading bqrs data');
   }
 
-  async runInterpretCommand(format: string, metadata: QueryMetadata, resultsPath: string, interpretedResultsPath: string, sourceInfo?: SourceInfo) {
+  async runInterpretCommand(format: string, additonalArgs: string[], metadata: QueryMetadata, resultsPath: string, interpretedResultsPath: string, sourceInfo?: SourceInfo) {
     const args = [
       '--output', interpretedResultsPath,
       '--format', format,
       // Forward all of the query metadata.
       ...Object.entries(metadata).map(([key, value]) => `-t=${key}=${value}`)
-    ];
-    if (format == SARIF_FORMAT) {
-      // TODO: This flag means that we don't group interpreted results
-      // by primary location. We may want to revisit whether we call
-      // interpretation with and without this flag, or do some
-      // grouping client-side.
-      args.push('--no-group-results');
-    }
+    ].concat(additonalArgs);
     if (sourceInfo !== undefined) {
       args.push(
         '--source-archive', sourceInfo.sourceArchive,
@@ -722,13 +716,47 @@ export class CodeQLCliServer implements Disposable {
     await this.runCodeQlCliCommand(['bqrs', 'interpret'], args, 'Interpreting query results');
   }
 
-  async interpretBqrs(metadata: QueryMetadata, resultsPath: string, interpretedResultsPath: string, sourceInfo?: SourceInfo): Promise<sarif.Log> {
-    await this.runInterpretCommand(SARIF_FORMAT, metadata, resultsPath, interpretedResultsPath, sourceInfo);
+  async interpretBqrsSarif(metadata: QueryMetadata, resultsPath: string, interpretedResultsPath: string, sourceInfo?: SourceInfo): Promise<sarif.Log> {
+    const additionalArgs = [
+      // TODO: This flag means that we don't group interpreted results
+      // by primary location. We may want to revisit whether we call
+      // interpretation with and without this flag, or do some
+      // grouping client-side.
+      '--no-group-results'
+    ];
+
+    await this.runInterpretCommand(SARIF_FORMAT, additionalArgs, metadata, resultsPath, interpretedResultsPath, sourceInfo);
     return await sarifParser(interpretedResultsPath);
   }
 
+  // Warning: this function is untenable for large dot files,
+  async readDotFiles(dir: string): Promise<string[]> {
+    const dotFiles: Promise<string>[] = [];
+    for await (const file of walkDirectory(dir)) {
+      if (file.endsWith('.dot')) {
+        dotFiles.push(fs.readFile(file, 'utf8'));
+      }
+    }
+    return Promise.all(dotFiles);
+  }
+
+  async interpretBqrsGraph(metadata: QueryMetadata, resultsPath: string, interpretedResultsPath: string, sourceInfo?: SourceInfo): Promise<string[]> {
+    const additionalArgs = sourceInfo
+      ? ['--dot-location-url-format', 'file://' + sourceInfo.sourceLocationPrefix + '{path}:{start:line}:{start:column}:{end:line}:{end:column}']
+      : [];
+
+    await this.runInterpretCommand('dot', additionalArgs, metadata, resultsPath, interpretedResultsPath, sourceInfo);
+
+    try {
+      const dot = await this.readDotFiles(interpretedResultsPath);
+      return dot;
+    } catch (err) {
+      throw new Error(`Reading output of interpretation failed: ${err.stderr || err}`);
+    }
+  }
+
   async generateResultsCsv(metadata: QueryMetadata, resultsPath: string, csvPath: string, sourceInfo?: SourceInfo): Promise<void> {
-    await this.runInterpretCommand(CSV_FORMAT, metadata, resultsPath, csvPath, sourceInfo);
+    await this.runInterpretCommand(CSV_FORMAT, [], metadata, resultsPath, csvPath, sourceInfo);
   }
 
   async sortBqrs(resultsPath: string, sortedResultsPath: string, resultSet: string, sortKeys: number[], sortDirections: SortDirection[]): Promise<void> {
@@ -1224,9 +1252,9 @@ export class CliVersionConstraint {
 
   /**
    * CLI version where the `--evaluator-log` and related options to the query server were introduced,
-   * on a per-query server basis. 
+   * on a per-query server basis.
    */
-   public static CLI_VERSION_WITH_STRUCTURED_EVAL_LOG = new SemVer('2.8.2');
+  public static CLI_VERSION_WITH_STRUCTURED_EVAL_LOG = new SemVer('2.8.2');
 
   constructor(private readonly cli: CodeQLCliServer) {
     /**/
diff --git a/extensions/ql-vscode/src/config.ts b/extensions/ql-vscode/src/config.ts
index bb3a57e40..3e145ea7c 100644
--- a/extensions/ql-vscode/src/config.ts
+++ b/extensions/ql-vscode/src/config.ts
@@ -95,8 +95,8 @@ const CUSTOM_LOG_DIRECTORY_SETTING = new Setting('customLogDirectory', RUNNING_Q
 
 /** When these settings change, the running query server should be restarted. */
 const QUERY_SERVER_RESTARTING_SETTINGS = [
-  NUMBER_OF_THREADS_SETTING, SAVE_CACHE_SETTING, CACHE_SIZE_SETTING, MEMORY_SETTING, 
-  DEBUG_SETTING, CUSTOM_LOG_DIRECTORY_SETTING, 
+  NUMBER_OF_THREADS_SETTING, SAVE_CACHE_SETTING, CACHE_SIZE_SETTING, MEMORY_SETTING,
+  DEBUG_SETTING, CUSTOM_LOG_DIRECTORY_SETTING,
 ];
 
 export interface QueryServerConfig {
diff --git a/extensions/ql-vscode/src/contextual/keyType.ts b/extensions/ql-vscode/src/contextual/keyType.ts
index c21fbebfd..af5777cb1 100644
--- a/extensions/ql-vscode/src/contextual/keyType.ts
+++ b/extensions/ql-vscode/src/contextual/keyType.ts
@@ -2,6 +2,7 @@ export enum KeyType {
   DefinitionQuery = 'DefinitionQuery',
   ReferenceQuery = 'ReferenceQuery',
   PrintAstQuery = 'PrintAstQuery',
+  PrintCfgQuery = 'PrintCfgQuery',
 }
 
 export function tagOfKeyType(keyType: KeyType): string {
@@ -12,6 +13,8 @@ export function tagOfKeyType(keyType: KeyType): string {
       return 'ide-contextual-queries/local-references';
     case KeyType.PrintAstQuery:
       return 'ide-contextual-queries/print-ast';
+    case KeyType.PrintCfgQuery:
+      return 'ide-contextual-queries/print-cfg';
   }
 }
 
@@ -23,6 +26,8 @@ export function nameOfKeyType(keyType: KeyType): string {
       return 'references';
     case KeyType.PrintAstQuery:
       return 'print AST';
+    case KeyType.PrintCfgQuery:
+      return 'print CFG';
   }
 }
 
@@ -32,6 +37,7 @@ export function kindOfKeyType(keyType: KeyType): string {
     case KeyType.ReferenceQuery:
       return 'definitions';
     case KeyType.PrintAstQuery:
+    case KeyType.PrintCfgQuery:
       return 'graph';
   }
 }
diff --git a/extensions/ql-vscode/src/contextual/templateProvider.ts b/extensions/ql-vscode/src/contextual/templateProvider.ts
index 653595189..282fddfea 100644
--- a/extensions/ql-vscode/src/contextual/templateProvider.ts
+++ b/extensions/ql-vscode/src/contextual/templateProvider.ts
@@ -230,3 +230,62 @@ export class TemplatePrintAstProvider {
     };
   }
 }
+
+export class TemplatePrintCfgProvider {
+  private cache: CachedOperation<[Uri, messages.TemplateDefinitions] | undefined>;
+
+  constructor(
+    private cli: CodeQLCliServer,
+    private dbm: DatabaseManager,
+  ) {
+    this.cache = new CachedOperation<[Uri, messages.TemplateDefinitions] | undefined>(this.getCfgUri.bind(this));
+  }
+
+  async provideCfgUri(document?: TextDocument): Promise<[Uri, messages.TemplateDefinitions] | undefined> {
+    if (!document) {
+      return;
+    }
+    return await this.cache.get(document.uri.toString());
+  }
+
+  private async getCfgUri(uriString: string): Promise<[Uri, messages.TemplateDefinitions]> {
+    const uri = Uri.parse(uriString, true);
+    if (uri.scheme !== zipArchiveScheme) {
+      throw new Error('CFG Viewing is only available for databases with zipped source archives.');
+    }
+
+    const zippedArchive = decodeSourceArchiveUri(uri);
+    const sourceArchiveUri = encodeArchiveBasePath(zippedArchive.sourceArchiveZipPath);
+    const db = this.dbm.findDatabaseItemBySourceArchive(sourceArchiveUri);
+
+    if (!db) {
+      throw new Error('Can\'t infer database from the provided source.');
+    }
+
+    const qlpack = await qlpackOfDatabase(this.cli, db);
+    if (!qlpack) {
+      throw new Error('Can\'t infer qlpack from database source archive.');
+    }
+    const queries = await resolveQueries(this.cli, qlpack, KeyType.PrintCfgQuery);
+    if (queries.length > 1) {
+      throw new Error(`Found multiple Print CFG queries. Can't continue. Make sure there is exacly one query with the tag ${KeyType.PrintCfgQuery}`);
+    }
+    if (queries.length === 0) {
+      throw new Error(`Did not find any Print CFG queries. Can't continue. Make sure there is exacly one query with the tag ${KeyType.PrintCfgQuery}`);
+    }
+
+    const queryUri = Uri.file(queries[0]);
+
+    const templates: messages.TemplateDefinitions = {
+      [TEMPLATE_NAME]: {
+        values: {
+          tuples: [[{
+            stringValue: zippedArchive.pathWithinSourceArchive
+          }]]
+        }
+      }
+    };
+
+    return [queryUri, templates];
+  }
+}
diff --git a/extensions/ql-vscode/src/extension.ts b/extensions/ql-vscode/src/extension.ts
index 56506ed0c..6a5a44935 100644
--- a/extensions/ql-vscode/src/extension.ts
+++ b/extensions/ql-vscode/src/extension.ts
@@ -42,7 +42,8 @@ import { DatabaseUI } from './databases-ui';
 import {
   TemplateQueryDefinitionProvider,
   TemplateQueryReferenceProvider,
-  TemplatePrintAstProvider
+  TemplatePrintAstProvider,
+  TemplatePrintCfgProvider
 } from './contextual/templateProvider';
 import {
   DEFAULT_DISTRIBUTION_VERSION_RANGE,
@@ -1047,7 +1048,8 @@ async function activateWithInstalledDistribution(
   );
 
   const astViewer = new AstViewer();
-  const templateProvider = new TemplatePrintAstProvider(cliServer, qs, dbm, contextualQueryStorageDir);
+  const printAstTemplateProvider = new TemplatePrintAstProvider(cliServer, qs, dbm, contextualQueryStorageDir);
+  const cfgTemplateProvider = new TemplatePrintCfgProvider(cliServer, dbm);
 
   ctx.subscriptions.push(astViewer);
   ctx.subscriptions.push(commandRunnerWithProgress('codeQL.viewAst', async (
@@ -1055,7 +1057,7 @@ async function activateWithInstalledDistribution(
     token: CancellationToken,
     selectedFile: Uri
   ) => {
-    const ast = await templateProvider.provideAst(
+    const ast = await printAstTemplateProvider.provideAst(
       progress,
       token,
       selectedFile ?? window.activeTextEditor?.document.uri,
@@ -1068,6 +1070,25 @@ async function activateWithInstalledDistribution(
     title: 'Calculate AST'
   }));
 
+  ctx.subscriptions.push(
+    commandRunnerWithProgress(
+      'codeQL.viewCfg',
+      async (
+        progress: ProgressCallback,
+        token: CancellationToken
+      ) => {
+        const res = await cfgTemplateProvider.provideCfgUri(window.activeTextEditor?.document);
+        if (res) {
+          await compileAndRunQuery(false, res[0], progress, token, undefined);
+        }
+      },
+      {
+        title: 'Calculating Control Flow Graph',
+        cancellable: true
+      }
+    )
+  );
+
   await commands.executeCommand('codeQLDatabases.removeOrphanedDatabases');
 
   void logger.log('Successfully finished extension initialization.');
diff --git a/extensions/ql-vscode/src/helpers.ts b/extensions/ql-vscode/src/helpers.ts
index 4dc8cfbc1..fe2760bb5 100644
--- a/extensions/ql-vscode/src/helpers.ts
+++ b/extensions/ql-vscode/src/helpers.ts
@@ -558,3 +558,25 @@ export async function createTimestampFile(storagePath: string) {
   await fs.ensureDir(storagePath);
   await fs.writeFile(timestampPath, Date.now().toString(), 'utf8');
 }
+
+
+/**
+ * Recursively walk a directory and return the full path to all files found.
+ * Symbolic links are ignored.
+ *
+ * @param dir the directory to walk
+ *
+ * @return An iterator of the full path to all files recursively found in the directory.
+ */
+export async function* walkDirectory(dir: string): AsyncIterableIterator<string> {
+  const seenFiles = new Set<string>();
+  for await (const d of await fs.opendir(dir)) {
+    const entry = path.join(dir, d.name);
+    seenFiles.add(entry);
+    if (d.isDirectory()) {
+      yield* walkDirectory(entry);
+    } else if (d.isFile()) {
+      yield entry;
+    }
+  }
+}
diff --git a/extensions/ql-vscode/src/interface.ts b/extensions/ql-vscode/src/interface.ts
index 12e007014..7954e1a46 100644
--- a/extensions/ql-vscode/src/interface.ts
+++ b/extensions/ql-vscode/src/interface.ts
@@ -27,12 +27,13 @@ import {
   InterpretedResultsSortState,
   SortDirection,
   ALERTS_TABLE_NAME,
+  GRAPH_TABLE_NAME,
   RawResultsSortState,
 } from './pure/interface-types';
 import { Logger } from './logging';
 import * as messages from './pure/messages';
 import { commandRunner } from './commandRunner';
-import { CompletedQueryInfo, interpretResults } from './query-results';
+import { CompletedQueryInfo, interpretResultsSarif, interpretGraphResults } from './query-results';
 import { QueryEvaluationInfo } from './run-queries';
 import { parseSarifLocation, parseSarifPlainTextMessage } from './pure/sarif-utils';
 import {
@@ -88,12 +89,36 @@ function sortInterpretedResults(
   }
 }
 
-function numPagesOfResultSet(resultSet: RawResultSet): number {
-  return Math.ceil(resultSet.schema.rows / PAGE_SIZE.getValue<number>());
+function interpretedPageSize(interpretation: Interpretation | undefined): number {
+  if (interpretation?.data.t == 'GraphInterpretationData') {
+    // Graph views always have one result per page.
+    return 1;
+  }
+  return PAGE_SIZE.getValue<number>();
+}
+
+function numPagesOfResultSet(resultSet: RawResultSet, interpretation?: Interpretation): number {
+  const pageSize = interpretedPageSize(interpretation);
+
+  const n = interpretation?.data.t == 'GraphInterpretationData'
+    ? interpretation.data.dot.length
+    : resultSet.schema.rows;
+
+  return Math.ceil(n / pageSize);
 }
 
 function numInterpretedPages(interpretation: Interpretation | undefined): number {
-  return Math.ceil((interpretation?.sarif.runs[0].results?.length || 0) / PAGE_SIZE.getValue<number>());
+  if (!interpretation) {
+    return 0;
+  }
+
+  const pageSize = interpretedPageSize(interpretation);
+
+  const n = interpretation.data.t == 'GraphInterpretationData'
+    ? interpretation.data.dot.length
+    : interpretation.data.runs[0].results?.length || 0;
+
+  return Math.ceil(n / pageSize);
 }
 
 export class InterfaceManager extends DisposableObject {
@@ -181,6 +206,7 @@ export class InterfaceManager extends DisposableObject {
         () => {
           this._panel = undefined;
           this._displayedQuery = undefined;
+          this._panelLoaded = false;
         },
         null,
         ctx.subscriptions
@@ -305,7 +331,7 @@ export class InterfaceManager extends DisposableObject {
           await this.changeInterpretedSortState(msg.sortState);
           break;
         case 'changePage':
-          if (msg.selectedTable === ALERTS_TABLE_NAME) {
+          if (msg.selectedTable === ALERTS_TABLE_NAME || msg.selectedTable === GRAPH_TABLE_NAME) {
             await this.showPageOfInterpretedResults(msg.pageNumber);
           }
           else {
@@ -438,7 +464,7 @@ export class InterfaceManager extends DisposableObject {
     const parsedResultSets: ParsedResultSets = {
       pageNumber: 0,
       pageSize,
-      numPages: numPagesOfResultSet(resultSet),
+      numPages: numPagesOfResultSet(resultSet, this._interpretation),
       numInterpretedPages: numInterpretedPages(this._interpretation),
       resultSet: { ...resultSet, t: 'RawResultSet' },
       selectedTable: undefined,
@@ -474,7 +500,7 @@ export class InterfaceManager extends DisposableObject {
     if (this._interpretation === undefined) {
       throw new Error('Trying to show interpreted results but interpretation was undefined');
     }
-    if (this._interpretation.sarif.runs[0].results === undefined) {
+    if (this._interpretation.data.t === 'SarifInterpretationData' && this._interpretation.data.runs[0].results === undefined) {
       throw new Error('Trying to show interpreted results but results were undefined');
     }
 
@@ -488,7 +514,7 @@ export class InterfaceManager extends DisposableObject {
       metadata: this._displayedQuery.completedQuery.query.metadata,
       pageNumber,
       resultSetNames,
-      pageSize: PAGE_SIZE.getValue(),
+      pageSize: interpretedPageSize(this._interpretation),
       numPages: numInterpretedPages(this._interpretation),
       queryName: this._displayedQuery.label,
       queryPath: this._displayedQuery.initialInfo.queryPath
@@ -591,28 +617,45 @@ export class InterfaceManager extends DisposableObject {
       void this.logger.log('No results path. Cannot display interpreted results.');
       return undefined;
     }
+    let data;
+    let numTotalResults;
+    if (metadata?.kind === GRAPH_TABLE_NAME) {
+      data = await interpretGraphResults(
+        this.cliServer,
+        metadata,
+        resultsPaths,
+        sourceInfo
+      );
+      numTotalResults = data.dot.length;
+    } else {
+      const sarif = await interpretResultsSarif(
+        this.cliServer,
+        metadata,
+        resultsPaths,
+        sourceInfo
+      );
 
-    const sarif = await interpretResults(
-      this.cliServer,
-      metadata,
-      resultsPaths,
-      sourceInfo
-    );
+      sarif.runs.forEach(run => {
+        if (run.results) {
+          sortInterpretedResults(run.results, sortState);
+        }
+      });
 
-    sarif.runs.forEach(run => {
-      if (run.results !== undefined) {
-        sortInterpretedResults(run.results, sortState);
-      }
-    });
+      sarif.sortState = sortState;
+      data = sarif;
 
-    const numTotalResults = sarif.runs[0]?.results?.length || 0;
+      numTotalResults = (() => {
+        return sarif.runs?.[0]?.results
+          ? sarif.runs[0].results.length
+          : 0;
+      })();
+    }
 
     const interpretation: Interpretation = {
-      sarif,
+      data,
       sourceLocationPrefix,
       numTruncatedResults: 0,
-      numTotalResults,
-      sortState,
+      numTotalResults
     };
     this._interpretation = interpretation;
     return interpretation;
@@ -621,7 +664,6 @@ export class InterfaceManager extends DisposableObject {
   private getPageOfInterpretedResults(
     pageNumber: number
   ): Interpretation {
-
     function getPageOfRun(run: Sarif.Run): Sarif.Run {
       return {
         ...run, results: run.results?.slice(
@@ -631,16 +673,24 @@ export class InterfaceManager extends DisposableObject {
       };
     }
 
-    if (this._interpretation === undefined) {
+    const interp = this._interpretation;
+    if (interp === undefined) {
       throw new Error('Tried to get interpreted results before interpretation finished');
     }
-    if (this._interpretation.sarif.runs.length !== 1) {
-      void this.logger.log(`Warning: SARIF file had ${this._interpretation.sarif.runs.length} runs, expected 1`);
+
+    if (interp.data.t !== 'SarifInterpretationData')
+      return interp;
+
+    if (interp.data.runs.length !== 1) {
+      void this.logger.log(`Warning: SARIF file had ${interp.data.runs.length} runs, expected 1`);
     }
-    const interp = this._interpretation;
+
     return {
       ...interp,
-      sarif: { ...interp.sarif, runs: [getPageOfRun(interp.sarif.runs[0])] },
+      data: {
+        ...interp.data,
+        runs: [getPageOfRun(interp.data.runs[0])]
+      }
     };
   }
 
@@ -730,9 +780,12 @@ export class InterfaceManager extends DisposableObject {
     interpretation: Interpretation,
     databaseItem: DatabaseItem
   ): Promise<void> {
-    const { sarif, sourceLocationPrefix } = interpretation;
+    const { data, sourceLocationPrefix } = interpretation;
 
-    if (!sarif.runs || !sarif.runs[0].results) {
+    if (data.t !== 'SarifInterpretationData')
+      return;
+
+    if (!data.runs || !data.runs[0].results) {
       void this.logger.log(
         'Didn\'t find a run in the sarif results. Error processing sarif?'
       );
@@ -741,7 +794,7 @@ export class InterfaceManager extends DisposableObject {
 
     const diagnostics: [Uri, ReadonlyArray<Diagnostic>][] = [];
 
-    for (const result of sarif.runs[0].results) {
+    for (const result of data.runs[0].results) {
       const message = result.message.text;
       if (message === undefined) {
         void this.logger.log('Sarif had result without plaintext message');
diff --git a/extensions/ql-vscode/src/pure/helpers-pure.ts b/extensions/ql-vscode/src/pure/helpers-pure.ts
index f11626a75..3940344b6 100644
--- a/extensions/ql-vscode/src/pure/helpers-pure.ts
+++ b/extensions/ql-vscode/src/pure/helpers-pure.ts
@@ -1,3 +1,4 @@
+
 /**
  * helpers-pure.ts
  * ------------
diff --git a/extensions/ql-vscode/src/pure/interface-types.ts b/extensions/ql-vscode/src/pure/interface-types.ts
index e2e3bb899..a0f2dbc0f 100644
--- a/extensions/ql-vscode/src/pure/interface-types.ts
+++ b/extensions/ql-vscode/src/pure/interface-types.ts
@@ -10,15 +10,17 @@ import { RawResultSet, ResultRow, ResultSetSchema, Column, ResolvableLocationVal
 
 export const SELECT_TABLE_NAME = '#select';
 export const ALERTS_TABLE_NAME = 'alerts';
+export const GRAPH_TABLE_NAME = 'graph';
 
 export type RawTableResultSet = { t: 'RawResultSet' } & RawResultSet;
-export type PathTableResultSet = {
-  t: 'SarifResultSet';
+export type InterpretedResultSet<T> = {
+  t: 'InterpretedResultSet';
   readonly schema: ResultSetSchema;
   name: string;
-} & Interpretation;
+  interpretation: InterpretationT<T>;
+};
 
-export type ResultSet = RawTableResultSet | PathTableResultSet;
+export type ResultSet = RawTableResultSet | InterpretedResultSet<InterpretationData>;
 
 /**
  * Only ever show this many rows in a raw result table.
@@ -46,18 +48,31 @@ export interface PreviousExecution {
   durationSeconds: number;
 }
 
-export interface Interpretation {
-  sourceLocationPrefix: string;
-  numTruncatedResults: number;
-  numTotalResults: number;
+export type SarifInterpretationData = {
+  t: 'SarifInterpretationData';
   /**
    * sortState being undefined means don't sort, just present results in the order
    * they appear in the sarif file.
    */
   sortState?: InterpretedResultsSortState;
-  sarif: sarif.Log;
+} & sarif.Log;
+
+export type GraphInterpretationData = {
+  t: 'GraphInterpretationData';
+  dot: string[];
+};
+
+export type InterpretationData = SarifInterpretationData | GraphInterpretationData;
+
+export interface InterpretationT<T> {
+  sourceLocationPrefix: string;
+  numTruncatedResults: number;
+  numTotalResults: number;
+  data: T;
 }
 
+export type Interpretation = InterpretationT<InterpretationData>;
+
 export interface ResultsPaths {
   resultsPath: string;
   interpretedResultsPath: string;
@@ -357,8 +372,9 @@ export function getDefaultResultSetName(
   // Choose first available result set from the array
   return [
     ALERTS_TABLE_NAME,
+    GRAPH_TABLE_NAME,
     SELECT_TABLE_NAME,
-    resultSetNames[0],
+    resultSetNames[0]
   ].filter((resultSetName) => resultSetNames.includes(resultSetName))[0];
 }
 
diff --git a/extensions/ql-vscode/src/query-results.ts b/extensions/ql-vscode/src/query-results.ts
index 2c34d8703..53313332f 100644
--- a/extensions/ql-vscode/src/query-results.ts
+++ b/extensions/ql-vscode/src/query-results.ts
@@ -3,7 +3,6 @@ import { CancellationTokenSource, env } from 'vscode';
 import { QueryWithResults, QueryEvaluationInfo } from './run-queries';
 import * as messages from './pure/messages';
 import * as cli from './cli';
-import * as sarif from 'sarif';
 import * as fs from 'fs-extra';
 import * as path from 'path';
 import {
@@ -11,7 +10,9 @@ import {
   SortedResultSetInfo,
   QueryMetadata,
   InterpretedResultsSortState,
-  ResultsPaths
+  ResultsPaths,
+  SarifInterpretationData,
+  GraphInterpretationData
 } from './pure/interface-types';
 import { QueryHistoryConfig } from './config';
 import { DatabaseInfo } from './pure/interface-types';
@@ -151,19 +152,39 @@ export class CompletedQueryInfo implements QueryWithResults {
 
 
 /**
- * Call cli command to interpret results.
+ * Call cli command to interpret SARIF results.
  */
-export async function interpretResults(
-  server: cli.CodeQLCliServer,
+export async function interpretResultsSarif(
+  cli: cli.CodeQLCliServer,
   metadata: QueryMetadata | undefined,
   resultsPaths: ResultsPaths,
   sourceInfo?: cli.SourceInfo
-): Promise<sarif.Log> {
+): Promise<SarifInterpretationData> {
   const { resultsPath, interpretedResultsPath } = resultsPaths;
   if (await fs.pathExists(interpretedResultsPath)) {
-    return JSON.parse(await fs.readFile(interpretedResultsPath, 'utf8'));
+    return { ...JSON.parse(await fs.readFile(interpretedResultsPath, 'utf8')), t: 'SarifInterpretationData' };
   }
-  return await server.interpretBqrs(ensureMetadataIsComplete(metadata), resultsPath, interpretedResultsPath, sourceInfo);
+  const res = await cli.interpretBqrsSarif(ensureMetadataIsComplete(metadata), resultsPath, interpretedResultsPath, sourceInfo);
+  return { ...res, t: 'SarifInterpretationData' };
+}
+
+/**
+ * Call cli command to interpret graph results.
+ */
+export async function interpretGraphResults(
+  cli: cli.CodeQLCliServer,
+  metadata: QueryMetadata | undefined,
+  resultsPaths: ResultsPaths,
+  sourceInfo?: cli.SourceInfo
+): Promise<GraphInterpretationData> {
+  const { resultsPath, interpretedResultsPath } = resultsPaths;
+  if (await fs.pathExists(interpretedResultsPath)) {
+    const dot = await cli.readDotFiles(interpretedResultsPath);
+    return { dot, t: 'GraphInterpretationData' };
+  }
+
+  const dot = await cli.interpretBqrsGraph(ensureMetadataIsComplete(metadata), resultsPath, interpretedResultsPath, sourceInfo);
+  return { dot, t: 'GraphInterpretationData' };
 }
 
 export function ensureMetadataIsComplete(metadata: QueryMetadata | undefined) {
@@ -181,7 +202,6 @@ export function ensureMetadataIsComplete(metadata: QueryMetadata | undefined) {
   return metadata;
 }
 
-
 /**
  * Used in Interface and Compare-Interface for queries that we know have been complated.
  */
diff --git a/extensions/ql-vscode/src/queryserver-client.ts b/extensions/ql-vscode/src/queryserver-client.ts
index 5baff7036..cc7423d65 100644
--- a/extensions/ql-vscode/src/queryserver-client.ts
+++ b/extensions/ql-vscode/src/queryserver-client.ts
@@ -174,7 +174,7 @@ export class QueryServerClient extends DisposableObject {
     if (await this.cliServer.cliConstraints.supportsStructuredEvalLog()) {
       args.push('--evaluator-log');
       args.push(`${this.opts.contextStoragePath}/structured-evaluator-log.json`);
-  
+
       // We hard-code the verbosity level to 5 and minify to false. 
       // This will be the behavior of the per-query structured logging in the CLI after 2.8.3.
       args.push('--evaluator-log-level');
diff --git a/extensions/ql-vscode/src/run-queries.ts b/extensions/ql-vscode/src/run-queries.ts
index 996a97045..6b34abd3f 100644
--- a/extensions/ql-vscode/src/run-queries.ts
+++ b/extensions/ql-vscode/src/run-queries.ts
@@ -86,7 +86,11 @@ export class QueryEvaluationInfo {
   get resultsPaths() {
     return {
       resultsPath: path.join(this.querySaveDir, 'results.bqrs'),
-      interpretedResultsPath: path.join(this.querySaveDir, 'interpretedResults.sarif'),
+      interpretedResultsPath: path.join(this.querySaveDir,
+        this.metadata?.kind === 'graph'
+          ? 'graphResults'
+          : 'interpretedResults.sarif'
+      ),
     };
   }
 
@@ -202,16 +206,21 @@ export class QueryEvaluationInfo {
       return false;
     }
 
-    const hasKind = !!this.metadata?.kind;
+    const kind = this.metadata?.kind;
+    const hasKind = !!kind;
     if (!hasKind) {
       void logger.log('Cannot produce interpreted results since the query does not have @kind metadata.');
       return false;
     }
 
+    // Graph queries only return interpreted results if we are in canary mode.
+    if (kind === 'graph') {
+      return config.isCanary();
+    }
+
     // table is the default query kind. It does not produce interpreted results.
     // any query kind that is not table can, in principle, produce interpreted results.
-    const isTable = hasKind && this.metadata?.kind === 'table';
-    return !isTable;
+    return kind !== 'table';
   }
 
   /**
diff --git a/extensions/ql-vscode/src/view/alert-table.tsx b/extensions/ql-vscode/src/view/alert-table.tsx
index 16e8a93a7..1ed563910 100644
--- a/extensions/ql-vscode/src/view/alert-table.tsx
+++ b/extensions/ql-vscode/src/view/alert-table.tsx
@@ -5,7 +5,7 @@ import * as Keys from '../pure/result-keys';
 import * as octicons from './octicons';
 import { className, renderLocation, ResultTableProps, zebraStripe, selectableZebraStripe, jumpToLocation, nextSortDirection, emptyQueryResultsMessage } from './result-table-utils';
 import { onNavigation, NavigationEvent } from './results';
-import { PathTableResultSet } from '../pure/interface-types';
+import { InterpretedResultSet, SarifInterpretationData } from '../pure/interface-types';
 import {
   parseSarifPlainTextMessage,
   parseSarifLocation,
@@ -15,7 +15,7 @@ import { InterpretedResultsSortColumn, SortDirection, InterpretedResultsSortStat
 import { vscode } from './vscode-api';
 import { isWholeFileLoc, isLineColumnLoc } from '../pure/bqrs-utils';
 
-export type PathTableProps = ResultTableProps & { resultSet: PathTableResultSet };
+export type PathTableProps = ResultTableProps & { resultSet: InterpretedResultSet<SarifInterpretationData> };
 export interface PathTableState {
   expanded: { [k: string]: boolean };
   selectedPathNode: undefined | Keys.PathNode;
@@ -51,7 +51,7 @@ export class PathTable extends React.Component<PathTableProps, PathTableState> {
   }
 
   sortClass(column: InterpretedResultsSortColumn): string {
-    const sortState = this.props.resultSet.sortState;
+    const sortState = this.props.resultSet.interpretation.data.sortState;
     if (sortState !== undefined && sortState.sortBy === column) {
       return sortState.sortDirection === SortDirection.asc ? 'sort-asc' : 'sort-desc';
     }
@@ -61,7 +61,7 @@ export class PathTable extends React.Component<PathTableProps, PathTableState> {
   }
 
   getNextSortState(column: InterpretedResultsSortColumn): InterpretedResultsSortState | undefined {
-    const oldSortState = this.props.resultSet.sortState;
+    const oldSortState = this.props.resultSet.interpretation.data.sortState;
     const prevDirection = oldSortState && oldSortState.sortBy === column ? oldSortState.sortDirection : undefined;
     const nextDirection = nextSortDirection(prevDirection, true);
     return nextDirection === undefined ? undefined :
@@ -94,7 +94,7 @@ export class PathTable extends React.Component<PathTableProps, PathTableState> {
     </thead>;
 
     const rows: JSX.Element[] = [];
-    const { numTruncatedResults, sourceLocationPrefix } = resultSet;
+    const { numTruncatedResults, sourceLocationPrefix } = resultSet.interpretation;
 
     function renderRelatedLocations(msg: string, relatedLocations: Sarif.Location[]): JSX.Element[] {
       const relatedLocationsById: { [k: string]: Sarif.Location } = {};
@@ -188,13 +188,13 @@ export class PathTable extends React.Component<PathTableProps, PathTableState> {
       return (e) => this.toggle(e, indices);
     };
 
-    if (!resultSet.sarif.runs?.[0]?.results?.length) {
+    if (!resultSet.interpretation.data.runs?.[0]?.results?.length) {
       return this.renderNoResults();
     }
 
     let expansionIndex = 0;
 
-    resultSet.sarif.runs[0].results.forEach((result, resultIndex) => {
+    resultSet.interpretation.data.runs[0].results.forEach((result, resultIndex) => {
       const text = result.message.text || '[no text]';
       const msg: JSX.Element[] =
         result.relatedLocations === undefined ?
@@ -307,7 +307,7 @@ export class PathTable extends React.Component<PathTableProps, PathTableState> {
       const { selectedPathNode } = prevState;
       if (selectedPathNode === undefined) return prevState;
 
-      const path = Keys.getPath(this.props.resultSet.sarif, selectedPathNode);
+      const path = Keys.getPath(this.props.resultSet.interpretation.data, selectedPathNode);
       if (path === undefined) return prevState;
 
       const nextIndex = selectedPathNode.pathNodeIndex + event.direction;
@@ -318,7 +318,7 @@ export class PathTable extends React.Component<PathTableProps, PathTableState> {
         return prevState;
       }
 
-      const loc = parseSarifLocation(sarifLoc, this.props.resultSet.sourceLocationPrefix);
+      const loc = parseSarifLocation(sarifLoc, this.props.resultSet.interpretation.sourceLocationPrefix);
       if (isNoLocation(loc)) {
         return prevState;
       }
diff --git a/extensions/ql-vscode/src/view/graph.tsx b/extensions/ql-vscode/src/view/graph.tsx
new file mode 100644
index 000000000..e04d40733
--- /dev/null
+++ b/extensions/ql-vscode/src/view/graph.tsx
@@ -0,0 +1,100 @@
+import * as React from 'react';
+import * as d3 from 'd3';
+import { ResultTableProps } from './result-table-utils';
+import { InterpretedResultSet, GraphInterpretationData } from '../pure/interface-types';
+import { graphviz } from 'd3-graphviz';
+import { jumpToLocation } from './result-table-utils';
+import { tryGetLocationFromString } from '../pure/bqrs-utils';
+export type GraphProps = ResultTableProps & { resultSet: InterpretedResultSet<GraphInterpretationData> };
+
+const graphClassName = 'vscode-codeql__result-tables-graph';
+const graphId = 'graph-results';
+export class Graph extends React.Component<GraphProps> {
+  constructor(props: GraphProps) {
+    super(props);
+  }
+
+  public render = (): JSX.Element => {
+    const { resultSet, offset } = this.props;
+    const graphData = resultSet.interpretation?.data?.dot[offset];
+
+    if (!graphData) {
+      return <>
+        <div className={graphClassName}>Graph is not available.</div>
+      </>;
+    }
+
+    return <>
+      <div className={graphClassName}>
+        <strong>Warning:</strong> The Graph Viewer is not a publicly released feature and will crash on large graphs.
+      </div>
+      <div id={graphId} className={graphClassName}><span>Rendering graph...</span></div>
+    </>;
+  };
+
+  public componentDidMount = () => {
+    this.renderGraph();
+  };
+
+  public componentDidUpdate = () => {
+    this.renderGraph();
+  };
+
+  private renderGraph = () => {
+    const { databaseUri, resultSet, offset } = this.props;
+    const graphData = resultSet.interpretation?.data?.dot[offset];
+
+    if (!graphData) {
+      return;
+    }
+
+    const options = {
+      fit: true,
+      fade: false,
+      growEnteringEdges: false,
+      zoom: true,
+    };
+
+    const element = document.querySelector(`#${graphId}`);
+    if (!element) {
+      return;
+    }
+    element.firstChild?.remove();
+
+    const color = getComputedStyle(element).color;
+    const backgroundColor = getComputedStyle(element).backgroundColor;
+    const borderColor = getComputedStyle(element).borderColor;
+    let firstPolygon = true;
+
+    graphviz(`#${graphId}`)
+      .options(options)
+      .attributer(function(d) {
+        if (d.tag == 'a') {
+          const url = d.attributes['xlink:href'] || d.attributes['href'];
+          const loc = tryGetLocationFromString(url);
+          if (loc !== undefined) {
+            d.attributes['xlink:href'] = '#';
+            d.attributes['href'] = '#';
+            loc.uri = 'file://' + loc.uri;
+            d3.select(this).on('click', function(e) { jumpToLocation(loc, databaseUri); });
+          }
+        }
+
+        if ('fill' in d.attributes) {
+          d.attributes.fill = d.tag == 'text' ? color : backgroundColor;
+        }
+        if ('stroke' in d.attributes) {
+          // There is no proper way to identify the element containing the graph (which we
+          // don't want a border around), as it is just has tag 'polygon'. Instead we assume
+          // that the first polygon we see is that element
+          if (d.tag != 'polygon' || !firstPolygon) {
+            d.attributes.stroke = borderColor;
+          } else {
+            firstPolygon = false;
+          }
+        }
+
+      })
+      .renderDot(graphData);
+  };
+}
diff --git a/extensions/ql-vscode/src/view/result-tables.tsx b/extensions/ql-vscode/src/view/result-tables.tsx
index c34dc2938..9eff046ed 100644
--- a/extensions/ql-vscode/src/view/result-tables.tsx
+++ b/extensions/ql-vscode/src/view/result-tables.tsx
@@ -8,12 +8,14 @@ import {
   InterpretedResultsSortState,
   ResultSet,
   ALERTS_TABLE_NAME,
+  GRAPH_TABLE_NAME,
   SELECT_TABLE_NAME,
   getDefaultResultSetName,
   ParsedResultSets,
   IntoResultsViewMsg,
 } from '../pure/interface-types';
 import { PathTable } from './alert-table';
+import { Graph } from './graph';
 import { RawTable } from './raw-results-table';
 import {
   ResultTableProps,
@@ -61,8 +63,8 @@ function getResultCount(resultSet: ResultSet): number {
   switch (resultSet.t) {
     case 'RawResultSet':
       return resultSet.schema.rows;
-    case 'SarifResultSet':
-      return resultSet.numTotalResults;
+    case 'InterpretedResultSet':
+      return resultSet.interpretation.numTotalResults;
   }
 }
 
@@ -87,27 +89,32 @@ export class ResultTables
       this.props.rawResultSets.map((rs) => ({ t: 'RawResultSet', ...rs }));
 
     if (this.props.interpretation != undefined) {
+      const tableName = this.getInterpretedTableName();
       resultSets.push({
-        t: 'SarifResultSet',
+        t: 'InterpretedResultSet',
         // FIXME: The values of version, columns, tupleCount are
-        // unused stubs because a SarifResultSet schema isn't used the
+        // unused stubs because a InterpretedResultSet schema isn't used the
         // same way as a RawResultSet. Probably should pull `name` field
         // out.
         schema: {
-          name: ALERTS_TABLE_NAME,
+          name: tableName,
           rows: 1,
           columns: []
         },
-        name: ALERTS_TABLE_NAME,
-        ...this.props.interpretation,
+        name: tableName,
+        interpretation: this.props.interpretation,
       });
     }
     return resultSets;
   }
 
+  private getInterpretedTableName(): string {
+    return this.props.interpretation?.data.t === 'GraphInterpretationData' ? GRAPH_TABLE_NAME : ALERTS_TABLE_NAME;
+  }
+
   private getResultSetNames(): string[] {
     return this.props.interpretation
-      ? this.props.parsedResultSets.resultSetNames.concat([ALERTS_TABLE_NAME])
+      ? this.props.parsedResultSets.resultSetNames.concat([this.getInterpretedTableName()])
       : this.props.parsedResultSets.resultSetNames;
   }
 
@@ -349,8 +356,19 @@ class ResultTable extends React.Component<ResultTableProps, Record<string, never
     switch (resultSet.t) {
       case 'RawResultSet': return <RawTable
         {...this.props} resultSet={resultSet} />;
-      case 'SarifResultSet': return <PathTable
-        {...this.props} resultSet={resultSet} />;
+      case 'InterpretedResultSet': {
+        const data = resultSet.interpretation.data;
+        switch (data.t) {
+          case 'SarifInterpretationData': {
+            const sarifResultSet = { ...resultSet, interpretation: { ...resultSet.interpretation, data } };
+            return <PathTable {...this.props} resultSet={sarifResultSet} />;
+          }
+          case 'GraphInterpretationData': {
+            const grapResultSet = { ...resultSet, interpretation: { ...resultSet.interpretation, data } };
+            return <Graph {...this.props} resultSet={grapResultSet} />;
+          }
+        }
+      }
     }
   }
 }
diff --git a/extensions/ql-vscode/src/view/results.tsx b/extensions/ql-vscode/src/view/results.tsx
index d20c0f7eb..c3fb886af 100644
--- a/extensions/ql-vscode/src/view/results.tsx
+++ b/extensions/ql-vscode/src/view/results.tsx
@@ -11,6 +11,7 @@ import {
   QueryMetadata,
   ResultsPaths,
   ALERTS_TABLE_NAME,
+  GRAPH_TABLE_NAME,
   ParsedResultSets,
 } from '../pure/interface-types';
 import { EventHandlers as EventHandlerList } from './event-handler-list';
@@ -104,7 +105,9 @@ class App extends React.Component<Record<string, never>, ResultsViewState> {
 
         void this.loadResults();
         break;
-      case 'showInterpretedPage':
+      case 'showInterpretedPage': {
+        const tableName = msg.interpretation.data.t === 'GraphInterpretationData' ? GRAPH_TABLE_NAME : ALERTS_TABLE_NAME;
+
         this.updateStateWithNewResultsInfo({
           resultsPath: '', // FIXME: Not used for interpreted, refactor so this is not needed
           parsedResultSets: {
@@ -114,16 +117,16 @@ class App extends React.Component<Record<string, never>, ResultsViewState> {
             resultSetNames: msg.resultSetNames,
             pageNumber: msg.pageNumber,
             resultSet: {
-              t: 'SarifResultSet',
-              name: ALERTS_TABLE_NAME,
+              t: 'InterpretedResultSet',
+              name: tableName,
               schema: {
-                name: ALERTS_TABLE_NAME,
+                name: tableName,
                 rows: 1,
                 columns: []
               },
-              ...msg.interpretation,
+              interpretation: msg.interpretation,
             },
-            selectedTable: ALERTS_TABLE_NAME,
+            selectedTable: tableName,
           },
           origResultsPaths: undefined as any, // FIXME: Not used for interpreted, refactor so this is not needed
           sortedResultsMap: new Map(), // FIXME: Not used for interpreted, refactor so this is not needed
@@ -136,6 +139,7 @@ class App extends React.Component<Record<string, never>, ResultsViewState> {
         });
         void this.loadResults();
         break;
+      }
       case 'resultsUpdating':
         this.setState({
           isExpectingResultsUpdate: true,
@@ -191,7 +195,7 @@ class App extends React.Component<Record<string, never>, ResultsViewState> {
     const resultSet = parsedResultSets.resultSet;
     if (!resultSet.t) {
       throw new Error(
-        'Missing result set type. Should be either "SarifResultSet" or "RawResultSet".'
+        'Missing result set type. Should be either "InterpretedResultSet" or "RawResultSet".'
       );
     }
     return [resultSet];
@@ -260,6 +264,8 @@ class App extends React.Component<Record<string, never>, ResultsViewState> {
     ) {
       const parsedResultSets = displayedResults.resultsInfo.parsedResultSets;
       const key = (parsedResultSets.selectedTable || '') + parsedResultSets.pageNumber;
+      const data = displayedResults.resultsInfo.interpretation?.data;
+
       return (
         <ResultTables
           key={key}
@@ -279,9 +285,7 @@ class App extends React.Component<Record<string, never>, ResultsViewState> {
               : undefined
           }
           sortStates={displayedResults.results.sortStates}
-          interpretedSortState={
-            displayedResults.resultsInfo.interpretation?.sortState
-          }
+          interpretedSortState={data?.t == 'SarifInterpretationData' ? data.sortState : undefined}
           isLoadingNewResults={
             this.state.isExpectingResultsUpdate ||
             this.state.nextResultsInfo !== null
@@ -298,6 +302,7 @@ class App extends React.Component<Record<string, never>, ResultsViewState> {
   componentDidMount(): void {
     this.vscodeMessageHandler = this.vscodeMessageHandler.bind(this);
     window.addEventListener('message', this.vscodeMessageHandler);
+    vscode.postMessage({ t: 'resultViewLoaded' });
   }
 
   componentWillUnmount(): void {
@@ -316,5 +321,3 @@ class App extends React.Component<Record<string, never>, ResultsViewState> {
 }
 
 Rdom.render(<App />, document.getElementById('root'));
-
-vscode.postMessage({ t: 'resultViewLoaded' });
diff --git a/extensions/ql-vscode/src/view/resultsView.css b/extensions/ql-vscode/src/view/resultsView.css
index 1d8c02084..fdb35ba73 100644
--- a/extensions/ql-vscode/src/view/resultsView.css
+++ b/extensions/ql-vscode/src/view/resultsView.css
@@ -134,6 +134,14 @@ select {
   font-size: inherit;
 }
 
+.vscode-codeql__result-tables-graph {
+  background-color: transparent;
+  border-color: var(--vscode-dropdown-border);
+  color: var(--vscode-editor-foreground);
+  text-align: center;
+  width: 100%;
+}
+
 .vscode-codeql__result-tables-updating-text {
   margin-left: 1em;
 }
diff --git a/extensions/ql-vscode/src/vscode-tests/directory-walker.ts b/extensions/ql-vscode/src/vscode-tests/directory-walker.ts
deleted file mode 100644
index da0aa7b91..000000000
--- a/extensions/ql-vscode/src/vscode-tests/directory-walker.ts
+++ /dev/null
@@ -1,23 +0,0 @@
-import * as path from 'path';
-import * as fs from 'fs-extra';
-
-/**
- * Recursively walk a directory and return the full path to all files found.
- * Note that this function uses synchronous fs calls, so it should only be used in tests.
- *
- * @param dir the directory to walk
- *
- * @return An iterator of the full path to all files recursively found in the directory.
- */
-export function* walk(dir: string): IterableIterator<string> {
-  const files = fs.readdirSync(dir);
-  for (const file of files) {
-    const filePath = path.join(dir, file);
-    const stat = fs.statSync(filePath);
-    if (stat.isDirectory()) {
-      yield* walk(filePath);
-    } else {
-      yield filePath;
-    }
-  }
-}
diff --git a/extensions/ql-vscode/src/vscode-tests/no-workspace/contextual/queryResolver.test.ts b/extensions/ql-vscode/src/vscode-tests/no-workspace/contextual/queryResolver.test.ts
index 71a463785..ea1b3a6b6 100644
--- a/extensions/ql-vscode/src/vscode-tests/no-workspace/contextual/queryResolver.test.ts
+++ b/extensions/ql-vscode/src/vscode-tests/no-workspace/contextual/queryResolver.test.ts
@@ -65,8 +65,6 @@ describe('queryResolver', () => {
     it('should throw an error when there are no queries found', async () => {
       mockCli.resolveQueriesInSuite.returns([]);
 
-      // TODO: Figure out why chai-as-promised isn't failing the test on an
-      // unhandled rejection.
       try {
         await module.resolveQueries(mockCli, { dbschemePack: 'my-qlpack' }, KeyType.DefinitionQuery);
         // should reject
diff --git a/extensions/ql-vscode/src/vscode-tests/no-workspace/helpers.test.ts b/extensions/ql-vscode/src/vscode-tests/no-workspace/helpers.test.ts
index 212733b6a..6af5fdda7 100644
--- a/extensions/ql-vscode/src/vscode-tests/no-workspace/helpers.test.ts
+++ b/extensions/ql-vscode/src/vscode-tests/no-workspace/helpers.test.ts
@@ -1,11 +1,23 @@
 import { expect } from 'chai';
 import 'mocha';
-import { EnvironmentVariableCollection, EnvironmentVariableMutator, Event, ExtensionContext, ExtensionMode, Memento, SecretStorage, SecretStorageChangeEvent, Uri, window } from 'vscode';
+import {
+  EnvironmentVariableCollection,
+  EnvironmentVariableMutator,
+  Event,
+  ExtensionContext,
+  ExtensionMode,
+  Memento,
+  SecretStorage,
+  SecretStorageChangeEvent,
+  Uri,
+  window
+} from 'vscode';
 import * as yaml from 'js-yaml';
 import * as tmp from 'tmp';
 import * as path from 'path';
 import * as fs from 'fs-extra';
 import * as sinon from 'sinon';
+import { DirResult } from 'tmp';
 
 import {
   getInitialQueryContents,
@@ -13,7 +25,8 @@ import {
   isLikelyDbLanguageFolder,
   showBinaryChoiceDialog,
   showBinaryChoiceWithUrlDialog,
-  showInformationMessageWithAction
+  showInformationMessageWithAction,
+  walkDirectory
 } from '../../helpers';
 import { reportStreamProgress } from '../../commandRunner';
 import Sinon = require('sinon');
@@ -377,3 +390,68 @@ describe('helpers', () => {
     });
   });
 });
+
+describe('walkDirectory', () => {
+  let tmpDir: DirResult;
+  let dir: string;
+  let dir2: string;
+
+  beforeEach(() => {
+    tmpDir = tmp.dirSync({ unsafeCleanup: true });
+    dir = path.join(tmpDir.name, 'dir');
+    fs.ensureDirSync(dir);
+    dir2 = path.join(tmpDir.name, 'dir2');
+  });
+
+  afterEach(() => {
+    tmpDir.removeCallback();
+  });
+
+
+  it('should walk a directory', async () => {
+    const file1 = path.join(dir, 'file1');
+    const file2 = path.join(dir, 'file2');
+    const file3 = path.join(dir, 'file3');
+    const dir3 = path.join(dir, 'dir3');
+    const file4 = path.join(dir, 'file4');
+    const file5 = path.join(dir, 'file5');
+    const file6 = path.join(dir, 'file6');
+
+    // These symlinks link back to paths that are already existing, so ignore.
+    const symLinkFile7 = path.join(dir, 'symlink0');
+    const symlinkDir = path.join(dir2, 'symlink1');
+
+    // some symlinks that point outside of the base dir.
+    const file8 = path.join(tmpDir.name, 'file8');
+    const file9 = path.join(dir2, 'file8');
+    const symlinkDir2 = path.join(dir2, 'symlink2');
+    const symlinkFile2 = path.join(dir2, 'symlinkFile3');
+
+    fs.ensureDirSync(dir2);
+    fs.ensureDirSync(dir3);
+
+    fs.writeFileSync(file1, 'file1');
+    fs.writeFileSync(file2, 'file2');
+    fs.writeFileSync(file3, 'file3');
+    fs.writeFileSync(file4, 'file4');
+    fs.writeFileSync(file5, 'file5');
+    fs.writeFileSync(file6, 'file6');
+    fs.writeFileSync(file8, 'file8');
+    fs.writeFileSync(file9, 'file9');
+
+    // We don't really need to be testing all of these variants of symlinks,
+    // but it doesn't hurt, and will help us if we ever do decide to support them.
+    fs.symlinkSync(file6, symLinkFile7, 'file');
+    fs.symlinkSync(dir3, symlinkDir, 'dir');
+    fs.symlinkSync(file8, symlinkFile2, 'file');
+    fs.symlinkSync(dir2, symlinkDir2, 'dir');
+
+    const files = [];
+    for await (const file of walkDirectory(dir)) {
+      files.push(file);
+    }
+
+    // Only real files should be returned.
+    expect(files.sort()).to.deep.eq([file1, file2, file3, file4, file5, file6]);
+  });
+});
diff --git a/extensions/ql-vscode/src/vscode-tests/no-workspace/query-results.test.ts b/extensions/ql-vscode/src/vscode-tests/no-workspace/query-results.test.ts
index 0aa6843fc..893ef6127 100644
--- a/extensions/ql-vscode/src/vscode-tests/no-workspace/query-results.test.ts
+++ b/extensions/ql-vscode/src/vscode-tests/no-workspace/query-results.test.ts
@@ -5,7 +5,7 @@ import 'mocha';
 import 'sinon-chai';
 import * as sinon from 'sinon';
 import * as chaiAsPromised from 'chai-as-promised';
-import { LocalQueryInfo, InitialQueryInfo, interpretResults } from '../../query-results';
+import { LocalQueryInfo, InitialQueryInfo, interpretResultsSarif } from '../../query-results';
 import { QueryEvaluationInfo, QueryWithResults } from '../../run-queries';
 import { QueryHistoryConfig } from '../../config';
 import { EvaluationResult, QueryResultType } from '../../pure/messages';
@@ -189,11 +189,11 @@ describe('query-results', () => {
     });
   });
 
-  it('should interpretResults', async () => {
+  it('should interpretResultsSarif', async () => {
     const spy = sandbox.mock();
-    spy.returns('1234');
+    spy.returns({ a: '1234' });
     const mockServer = {
-      interpretBqrs: spy
+      interpretBqrsSarif: spy
     } as unknown as CodeQLCliServer;
 
     const interpretedResultsPath = path.join(tmpDir.name, 'interpreted.json');
@@ -204,7 +204,7 @@ describe('query-results', () => {
       id: 'my-id' as string | undefined,
       scored: undefined
     };
-    const results1 = await interpretResults(
+    const results1 = await interpretResultsSarif(
       mockServer,
       metadata,
       {
@@ -213,7 +213,7 @@ describe('query-results', () => {
       sourceInfo as SourceInfo
     );
 
-    expect(results1).to.eq('1234');
+    expect(results1).to.deep.eq({ a: '1234', t: 'SarifInterpretationData' });
     expect(spy).to.have.been.calledWith(
       metadata,
       resultsPath, interpretedResultsPath, sourceInfo
@@ -221,9 +221,9 @@ describe('query-results', () => {
 
     // Try again, but with no id
     spy.reset();
-    spy.returns('1234');
+    spy.returns({ a: '1234' });
     delete metadata.id;
-    const results2 = await interpretResults(
+    const results2 = await interpretResultsSarif(
       mockServer,
       metadata,
       {
@@ -231,7 +231,7 @@ describe('query-results', () => {
       },
       sourceInfo as SourceInfo
     );
-    expect(results2).to.eq('1234');
+    expect(results2).to.deep.eq({ a: '1234', t: 'SarifInterpretationData' });
     expect(spy).to.have.been.calledWith(
       { kind: 'my-kind', id: 'dummy-id', scored: undefined },
       resultsPath, interpretedResultsPath, sourceInfo
@@ -242,7 +242,7 @@ describe('query-results', () => {
     fs.writeFileSync(interpretedResultsPath, JSON.stringify({
       a: 6
     }), 'utf8');
-    const results3 = await interpretResults(
+    const results3 = await interpretResultsSarif(
       mockServer,
       metadata,
       {
@@ -250,7 +250,7 @@ describe('query-results', () => {
       },
       sourceInfo as SourceInfo
     );
-    expect(results3).to.deep.eq({ a: 6 });
+    expect(results3).to.deep.eq({ a: 6, t: 'SarifInterpretationData' });
   });
 
   describe('splat and slurp', () => {
diff --git a/extensions/ql-vscode/src/vscode-tests/no-workspace/remote-query-history.test.ts b/extensions/ql-vscode/src/vscode-tests/no-workspace/remote-query-history.test.ts
index d64e11938..b8839ee38 100644
--- a/extensions/ql-vscode/src/vscode-tests/no-workspace/remote-query-history.test.ts
+++ b/extensions/ql-vscode/src/vscode-tests/no-workspace/remote-query-history.test.ts
@@ -17,7 +17,7 @@ import { AnalysesResultsManager } from '../../remote-queries/analyses-results-ma
 import { RemoteQueryResult } from '../../remote-queries/shared/remote-query-result';
 import { DisposableBucket } from '../disposable-bucket';
 import { testDisposeHandler } from '../test-dispose-handler';
-import { walk } from '../directory-walker';
+import { walkDirectory } from '../../helpers';
 
 chai.use(chaiAsPromised);
 const expect = chai.expect;
@@ -41,13 +41,19 @@ describe('Remote queries and query history manager', function() {
   let showTextDocumentSpy: sinon.SinonSpy;
   let openTextDocumentSpy: sinon.SinonSpy;
 
-  beforeEach(() => {
+  beforeEach(async function() {
+
+    // set a higher timeout since recursive delete below may take a while, expecially on Windows.
+    this.timeout(120000);
+
     // Since these tests change the state of the query history manager, we need to copy the original
     // to a temporary folder where we can manipulate it for tests
-    copyHistoryState();
+    await copyHistoryState();
   });
 
-  afterEach(() => {
+  afterEach(function() {
+    // set a higher timeout since recursive delete below may take a while, expecially on Windows.
+    this.timeout(120000);
     deleteHistoryState();
   });
 
@@ -321,18 +327,23 @@ describe('Remote queries and query history manager', function() {
     });
   });
 
-  function copyHistoryState() {
+  async function copyHistoryState() {
     fs.ensureDirSync(STORAGE_DIR);
     fs.copySync(path.join(__dirname, 'data/remote-queries/'), path.join(tmpDir.name, 'remote-queries'));
 
     // also, replace the files with "PLACEHOLDER" so that they have the correct directory
-    for (const p of walk(STORAGE_DIR)) {
+    for await (const p of walkDirectory(STORAGE_DIR)) {
       replacePlaceholder(path.join(p));
     }
   }
 
   function deleteHistoryState() {
-    fs.removeSync(STORAGE_DIR);
+    fs.rmSync(STORAGE_DIR, {
+      recursive: true,
+      force: true,
+      maxRetries: 10,
+      retryDelay: 100
+    });
   }
 
   function replacePlaceholder(filePath: string) {
diff --git a/extensions/ql-vscode/src/vscode-tests/no-workspace/run-queries.test.ts b/extensions/ql-vscode/src/vscode-tests/no-workspace/run-queries.test.ts
index 3b0a9f776..1b34faf79 100644
--- a/extensions/ql-vscode/src/vscode-tests/no-workspace/run-queries.test.ts
+++ b/extensions/ql-vscode/src/vscode-tests/no-workspace/run-queries.test.ts
@@ -4,15 +4,27 @@ import 'mocha';
 import 'sinon-chai';
 import * as sinon from 'sinon';
 import * as chaiAsPromised from 'chai-as-promised';
+import { Uri } from 'vscode';
 
 import { QueryEvaluationInfo } from '../../run-queries';
 import { Severity, compileQuery } from '../../pure/messages';
-import { Uri } from 'vscode';
+import * as config from '../../config';
 
 chai.use(chaiAsPromised);
 const expect = chai.expect;
 
 describe('run-queries', () => {
+  let sandbox: sinon.SinonSandbox;
+  beforeEach(() => {
+    sandbox = sinon.createSandbox();
+
+    sandbox.stub(config, 'isCanary').returns(false);
+  });
+
+  afterEach(() => {
+    sandbox.restore();
+  });
+
   it('should create a QueryEvaluationInfo', () => {
     const saveDir = 'query-save-dir';
     const info = createMockQueryInfo(true, saveDir);
@@ -38,6 +50,13 @@ describe('run-queries', () => {
 
     info.metadata!.kind = 'table';
     expect(info.canHaveInterpretedResults()).to.eq(false);
+
+    // Graphs are not interpreted unless canary is set
+    info.metadata!.kind = 'graph';
+    expect(info.canHaveInterpretedResults()).to.eq(false);
+
+    (config.isCanary as sinon.SinonStub).returns(true);
+    expect(info.canHaveInterpretedResults()).to.eq(true);
   });
 
   describe('compile', () => {
@@ -108,7 +127,7 @@ describe('run-queries', () => {
       config: {
         timeoutSecs: 5
       },
-      sendRequest: sinon.stub().returns(new Promise(resolve => {
+      sendRequest: sandbox.stub().returns(new Promise(resolve => {
         resolve({
           messages: [
             { message: 'err', severity: Severity.ERROR },
@@ -117,7 +136,7 @@ describe('run-queries', () => {
         });
       })),
       logger: {
-        log: sinon.spy()
+        log: sandbox.spy()
       }
     };
   }
diff --git a/extensions/ql-vscode/test/pure-tests/helpers-pure.test.ts b/extensions/ql-vscode/test/pure-tests/helpers-pure.test.ts
index bc6935629..caa51edb9 100644
--- a/extensions/ql-vscode/test/pure-tests/helpers-pure.test.ts
+++ b/extensions/ql-vscode/test/pure-tests/helpers-pure.test.ts
@@ -1,5 +1,6 @@
 import { fail } from 'assert';
 import { expect } from 'chai';
+
 import { asyncFilter } from '../../src/pure/helpers-pure';
 
 describe('helpers-pure', () => {