| #2 |  The Mystery of the Dead Man's Riddle
| 3 |
| #3 |  The Mystery of the Invisible Dog
| 0 |
| #4 |  The Mystery of Death Trap Mine
| 0 |
| #5 |  The Mystery of the Headless Horse
| 3.5 |
| #6 |  Alfred Hitchcock and the Three Investigators in the Mystery of the Vanishing Treasure, the Secret of Phantom Lake, the Mystery of the Dancing Devil Alfred Hitchcock and the Three Investigators in the Mystery of the Vanishing Treasure, the Secret of Phantom Lake, the Mystery of the Dancing Devil
| 0 |
| #7 |  The Secret of Terror Castle
| 3.33 |
| #8 |  The Mystery of the Stuttering Parrot
| 3.33 |
| #9 |  The Mystery of the Whispering Mummy
| 3.29 |
| #10 |  The Mystery of the Green Ghost
| 3 |
| #11 |  The Secret of Skeleton Island
| 3 |
| #12 |  The Mystery of the Fiery Eye
| 3 |
| #13 |  Záhada strieborného pavúka Záhada strieborného pavúka
| 0 |
| #14 |  The Mystery of the Screaming Clock
| 3 |
| #15 |  The Mystery of the Moaning Cave
| 4 |
| #16 |  The Secret of the Haunted Mirror
| 0 |
| #17 |  The Mystery of Monster Mountain
| 3 |
| #18 |  The Mystery of the Shrinking House
| 4 |
| #19 |  Mystery of the Singing Serpent
| 0 |
| #20 |  The Mystery of the Flaming Footprints
| 3.67 |
| #21 |  The Mystery of the Nervous Lion
| 3 |
| #22 |  The Mystery of the Coughing Dragon
| 4 |
| #23 |  The Secret of the Crooked Cat
| 2 |
| #24 |  The Mystery of the Laughing Shadow
| 3 |
| #25 |  The Mystery of the Talking Skull
| 0 |
| #26 |  The 3 Investigators Mysteries 3-in-one:"Mystery of the Missing Mermaid", "Mystery of the Two-Toed Pigeon", "Mystery of the Smashing Glass"
| 0 |
| #27 |  The Mystery of the Cranky Collector
| 3 |
| #28 |  The Mystery of Wreckers' Rock
| 3 |
| #29 |  The Mystery of the Creep-Show Crooks
| 3 |
| #30 |  The Mystery of the Rogues' Reunion
| 0 |
| #31 |  The Mystery of the Trail of Terror
| 3 |
| #32 |  The Mystery of the Kidnapped Whale
| 3 |
| #33 |  The Mystery of the Wandering Caveman
| 0 |
| #34 |  The Mystery of the Purple Pirate
| 3 |
| #35 |  Mystery of the Blazing Cliffs
| 0 |
| #36 |  The Mystery of the Scar-Faced Beggar The Mystery of the Scar-Faced Beggar
| 0 |
| #37 |  The Secret of Shark Reef
| 3 |
| #38 |  The Mystery of the Sinister Scarecrow
| 4 |
| #39 |  Mystery of the Deadly Double
| 3 |
| #40 | Alfred Hitchcock and the Three Investigators in the Mystery of the Magic Circle Alfred Hitchcock and the Three Investigators in the Mystery of the Magic Circle | 0 |
| #41 |  Ghosts, Spooks and Spectres | 0 |
| #42 |  The 8th Armada Ghost Book
| 0 |
| #43 |  15th Armada Ghost Book
| 0 |
