Who knew three boys solving mysteries would become one of the most famous long-running series in Germany?
All books are listed in release order.
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Original Series
- #1: The Secret of Terror Castle
- #2: The Mystery of the Stuttering Parrot
- #3: The Mystery of the Whispering Mummy
- #4: The Mystery of the Green Ghost
- #5: The Mystery of the Vanishing Treasure
- #6: The Secret of Skeleton Island
- #7: The Mystery of the Fiery Eye
- #8: The Mystery of the Silver Spider
- #9: The Mystery of the Screaming Clock
- #10: The Mystery of the Moaning Cave
- #11: The Mystery of the Talking Skull
- #12: The Mystery of the Laughing Shadow
- #13: The Secret of the Crooked Cat
- #14: The Mystery of the Coughing Dragon
- #15: The Mystery of the Flaming Footprints
- #16: The Mystery of the Nervous Lion
- #17: The Mystery of the Singing Serpent
- #18: The Mystery of the Shrinking House
- #19: The Secret of Phantom Lake
- #20: The Mystery of Monster Mountain
- #21: The Secret of the Haunted Mirror
- #22: The Mystery of the Dead Man's Riddle
- #23: The Mystery of the Invisible Dog
- #24: The Mystery of Death Trap Mine
- #25: The Mystery of the Dancing Devil
- #26: The Mystery of the Headless Horse
- #27: The Mystery of the Magic Circle
- #28: The Mystery of the Deadly Double
- #29: The Mystery of the Sinister Scarecrow
- #30: The Secret of Shark Reef
- #31: The Mystery of the Scar-Faced Beggar
- #32: The Mystery of the Blazing Cliffs
- #33: The Mystery of the Purple Pirate
- #34: The Mystery of the Wandering Cave Man
- #35: The Mystery of the Kidnapped Whale
- #36: The Mystery of the Missing Mermaid
- #37: The Mystery of the Two-Toed Pigeon
- #38: The Mystery of the Smashing Glass
- #39: The Mystery of the Trail of Terror
- #40: The Mystery of the Rogues' Reunion
- #41: The Mystery of the Creep-Show Crooks
- #42: The Mystery of Wrecker's Rock
- #43: The Mystery of the Cranky Collector
Crimebusters
- #1: Hot Wheels
- #2: Murder To Go
- #3: Rough Stuff
- #4: Funny Business
- #5: An Ear for Danger
- #6: Thriller Diller
- #7: Reel Trouble
- #8: Shoot the Works
- #9: Foul Play
- #10: Long Shot
- #11: Fatal Error
- #12: Brain Wash (German original)
- #13: High Strung (German original)
German Extended Release
Books
This does not include the works that were originally published in America. As most of these are only released in German, content may be translated into English.- #67: Der Schatz im Bergsee (The Treasure of the Mountain Lake)
- #68: Späte Rache (Late Revenge)
- #80: Geheimsache UFO (Secret UFO)
- #120: Spur ins Nicht (Evil Games)
- #180: Im Haus des Henkers (In the House of the Executioner)
Live Shows
- Phonophobia - Sinfonie der Angst (Symphony of Fear)
