| # | Book Title | Author | |
|---|---|---|---|
| 1 | Who Killed Mr. Boddy? | Weiner, Eric | |
| 2 | Secret Secret Passage, The | Weiner, Eric | |
| 3 | Case of the Invisible Cat, The | Weiner, Eric | |
| 4 | Mystery at the Masked Ball | Weiner, Eric | |
| 5 | Midnight Phone Calls | Weiner, Eric | |
| 6 | Booby-Trapped! | Weiner, Eric | |
| 7 | Picture Perfect Crime, The | Malcolm, Jahnna N. | |
| 8 | Clue in the Shadows, The | Malcolm, Jahnna N. | |
| 9 | Mystery in the Moonlight | Jacks, Marie | |
| 10 | Screaming Skeleton, The | Jacks, Marie | |
| 11 | Death By Candlelight | Jacks, Marie | |
| 12 | Haunted Gargoyle, The | Jacks, Marie | |
| 13 | Revenge of the Mummy | Jacks, Marie | |
| 14 | Dangerous Diamond, The | Jacks, Marie | |
| 15 | Vanishing Vampire, The | Jacks, Marie | |
| 16 | Danger After Dark | Smith, Dona | |
| 17 | Clue in the Crystal Ball, The | Smith, Dona | |
| 18 | Footprints in the Fog | Smith, Dona |