| 3.5 |
| 3 |
| 3.5 |
| 3.13 |
| 3.5 |
| 3.67 |
| 3 |
| 3 |
The great airport mystery | 3 |
| 3 |
| 3 |
| 3.6 |
What Happened at Midnight | 3.5 |
| 3 |
Footprints under the window | 3 |
| 3 |
A Figure in Hiding (Hardy Boys, #16) | 3 |
| 3.33 |
The Hidden Harbor Mystery | 3 |
The clue of the broken blade | 3 |
Mystery of the Flying Express | 3 |
The mystery of the disappearing floor. | 3.4 |
| 3.42 |
| 3 |
| 3.3 |
| 3 |
| 3 |
The flickering torch mystery | 3.33 |
The Secret of Wildcat Swamp | 3 |
The Wailing Siren Mystery | 3 |
The Secret of the Lost Tunnel | 3 |
The sign of the crooked arrow | 3 |
The Secret of Skull Mountain | 3 |
The Yellow Feather Mystery | 3 |
The Secret of Pirates' Hill | 3.33 |
| 3 |
| 3 |
| 3 |
The mystery of the Chinese junk | 3 |
The Arctic patrol mystery. | 3.33 |
Mystery of the Whale Tattoo - Franklin W. Dixon
- Jerrold Mundis
| 3 |
The secret agent on Flight 101 | 2.67 |
The mystery of the spiral bridge | 3 |
| 3 |
The Mystery of the Aztec Warrior | 3.67 |
The Viking Symbol Mystery | 3 |
Mystery of the Desert Giant | 3.5 |
The Clue of the Screeching Owl | 3 |
| 0 |
| 0 |
| 0 |
| 4 |
| 0 |
| 3.76 |
| 3.87 |
| 3.94 |
| 3.87 |
| 3.92 |
| 3.88 |
| 3.85 |
| 4.01 |
| 3.95 |
| 3.91 |
| 4.13 |
| 4.31 |
| 4.07 |
| 4.06 |
| 3.67 |
| 0 |
| 0 |
| 3 |
| 3.71 |
| 0 |
| 0 |
| 0 |
The Secret of Skeleton Reef | 0 |
The Ghost at Skeleton Rock | 3.33 |
| 3.33 |
| 0 |
| 3.94 |
| 3.71 |
| 4.09 |
The Swimming-Pool Library | 3.83 |
| 4 |
| 0 |
| 3.5 |
| 5 |
| 4 |
| 5 |
| 5 |
| 5 |
| 5 |
| 5 |
| 4 |
| 3.5 |
| 5 |
| 5 |
The Battle of the Labyrinth | 4.19 |
| 4.33 |
| 4.16 |