The American series of The Three Investigators

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

Find Your Fate Mysteries (1985–1987)

• RH1 Case of the Weeping Coffin
• RH2 Case of the Dancing Dinosaur
• RH3 Case of the House of Horrors
• RH4 Case of the Savage Statue

  Crimebusters (1989–1990)

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
13. High Strung