| # | Book Title | Author | |
|---|---|---|---|
| 1 | Mystery of the Stone Tiger | Keene, Carolyn | |
| 2 | Riddle of the Frozen Fountain | Keene, Carolyn | |
| 3 | Secret of the Silver Dolphin, The | Keene, Carolyn | |
| 4 | Mystery of the Wax Queen | Keene, Carolyn | |
| 5 | Secret of the Minstrel's Guitar | Keene, Carolyn | |
| 6 | Phantom Surfer, The | Keene, Carolyn | |
| 7 | Secret of the Swiss Chalet | Keene, Carolyn | |
| 8 | Haunted Lagoon, The | Keene, Carolyn | |
| 9 | Mystery of the Bamboo Bird | Keene, Carolyn | |
| 10 | Sierra Gold Mystery, The | Keene, Carolyn | |
| 11 | Secret of Lost Lake, The | Keene, Carolyn | |
| 12 | Winking Ruby Mystery, The | Keene, Carolyn | |
| 13 | Ghost in the Gallery, The | Keene, Carolyn | |
| 14 | Curious Coronation, The | Keene, Carolyn | |
| 15 | Hundred Year Mystery, The | Keene, Carolyn | |
| 16 | Mountain-Peak Mystery | Keene, Carolyn | |
| 17 | Witch's Omen, The | Keene, Carolyn |