| Cryptic Coat (10 variants) | 394 |
| Cryptex (16 variants) | 251 |
| Cryptex (10 variants) | 422 |
| Crowd-Control Warden (16 variants) | 193 |
| Crimestopper Sprite (16 variants) | 49 |
| Crime Novelist (16 variants) | 121 |
| Coveted Falcon (10 variants) | 393 |
| Coveted Falcon (16 variants) | 48 |
| Cornered Crook (16 variants) | 120 |
| Convenient Target (16 variants) | 119 |
| Convenient Target (16 variants) | 305 |
| Conspiracy Unraveler (16 variants) | 341 |
| Conspiracy Unraveler | 379 |
| Conspiracy Unraveler (16 variants) | 47 |
| Connecting the Dots (10 variants) | 403 |
| Connecting the Dots (16 variants) | 118 |
| Concealed Weapon (16 variants) | 117 |
| Commercial District (16 variants) | 259 |
| Commercial District (16 variants) | 324 |
| Cold Case Cracker (16 variants) | 46 |
| Coerced to Kill (16 variants) | 192 |
| Coerced to Kill (16 variants) | 311 |
| Clandestine Meddler (16 variants) | 82 |
| Clandestine Meddler (2 variants) | 82† |
| Chalk Outline (16 variants) | 157 |
| Cerebral Confiscation (16 variants) | 81 |
| Cease // Desist (16 variants) | 246 |
| Caught Red-Handed (16 variants) | 115 |
| Case of the Uneaten Feast (16 variants) | 10 |
| Case of the Trampled Garden (16 variants) | 156 |
| Case of the Stashed Skeleton (16 variants) | 80 |
| Case of the Shattered Pact (16 variants) | 1 |
| Case of the Ransacked Lab (16 variants) | 45 |
| Case of the Pilfered Proof (16 variants) | 9 |
| Case of the Locked Hothouse (16 variants) | 155 |
| Case of the Gorgon's Kiss (16 variants) | 79 |
| Case of the Gorgon's Kiss (2 variants) | 79† |
| Case of the Gateway Express (16 variants) | 8 |
| Case of the Filched Falcon (16 variants) | 44 |
| Case of the Crimson Pulse (16 variants) | 114 |
| Case of the Burning Masks (16 variants) | 113 |
| Case File Auditor (16 variants) | 7 |
| Case File Auditor (2 variants) | 7† |
| Candlestick (16 variants) | 43 |
| Call a Surprise Witness (16 variants) | 6 |
| Call a Surprise Witness (16 variants) | 289 |
| Buried in the Garden (16 variants) | 191 |
| Burden of Proof (14 variants) | 42 |
| Bubble Smuggler (16 variants) | 41 |
| Break Out (16 variants) | 190 |