The American series of The Three Investigators

(from book 31, The Three Investigators in...) • The Secret of Terror Castle (1964, by Robert Arthur) • The Mystery of the Stuttering Parrot (1964, by Robert Arthur) • The Mystery of the Whispering Mummy (1965, by Robert Arthur) • The Mystery of the Green Ghost (1965, by Robert Arthur) • The Mystery of the Vanishing Treasure (1966, by Robert Arthur) • The Secret of Skeleton Island (1966, by Robert Arthur) • The Mystery of the Fiery Eye (1967, by Robert Arthur) • The Mystery of the Silver Spider (1967, by Robert Arthur) • The Mystery of the Screaming Clock (1968, by Robert Arthur) • The Mystery of the Moaning Cave (1968, by William Arden) • The Mystery of the Talking Skull (1969, by Robert Arthur) • The Mystery of the Laughing Shadow (1969, by William Arden) • The Secret of the Crooked Cat (1970, by William Arden) • The Mystery of the Coughing Dragon (1970, by Nick West) • The Mystery of the Flaming Footprints (1971, by M. V. Carey) • The Mystery of the Nervous Lion (1971, by Nick West) • The Mystery of the Singing Serpent (1972, by M. V. Carey) • The Mystery of the Shrinking House (1972, by William Arden) • The Secret of Phantom Lake (1973, by William Arden) • The Mystery of Monster Mountain (1973, by M. V. Carey) • The Secret of the Haunted Mirror (1974, by M. V. Carey) • ''The Mystery of the Dead Man's Riddle'' (1974, by William Arden) • The Mystery of the Invisible Dog (1975, by M. V. Carey) • The Mystery of Death Trap Mine (1976, by M. V. Carey) • The Mystery of the Dancing Devil (1976, by William Arden) • The Mystery of the Headless Horse (1977, by William Arden) • The Mystery of the Magic Circle (1978, by M. V. Carey) • The Mystery of the Deadly Double (1978, by William Arden) • The Mystery of the Sinister Scarecrow (1979, by M. V. Carey) • The Secret of Shark Reef (1979, by William Arden) • The Mystery of the Scar-Faced Beggar (1981, by M. V. Carey) • The Mystery of the Blazing Cliffs (1981, by M. V. Carey) • The Mystery of the Purple Pirate (1982, by William Arden) • The Mystery of the Wandering Cave Man (1982, by M. V. Carey) • The Mystery of the Kidnapped Whale (1983, by Marc Brandel) • The Mystery of the Missing Mermaid (1983, by M. V. Carey) • The Mystery of the Two-Toed Pigeon (1984, by Marc Brandel) • The Mystery of the Smashing Glass (1984, by William Arden) • The Mystery of the Trail of Terror (1984, by M. V. Carey) • ''The Mystery of the Rogues' Reunion'' (1985, by Marc Brandel) • The Mystery of the Creep-Show Crooks (1985, by M. V. Carey) • ''The Mystery of Wrecker's Rock'' (1986, by William Arden) • The Mystery of the Cranky Collector (1987, by M. V. Carey) • The Mystery of the Ghost Train (published in German only in 2024, by M. V. Carey; unfinished/unpublished when the original series was cancelled) ==Find Your Fate Mysteries (1985–1987)==

• RH1 Case of the Weeping Coffin (1985, by Megan Stine and H. William Stine) • RH2 Case of the Dancing Dinosaur (by Rose Estes) • RH3 Case of the House of Horrors (by Megan Stine and H. William Stine) • RH4 Case of the Savage Statue (1987, by M.V. Carey) ==Crimebusters (1989–1990)==

• Hot Wheels (1989, by William Arden) • Murder to Go (1989, by Megan Stine and H. William Stine) • Rough Stuff (1989, by G.H. Stone) • Funny Business (1989, by William MacCay) • An Ear for Danger (1989, by Marc Brandel) • Thriller Diller (1989, by Megan Stine and H. William Stine) [retitled 'Hollywood Horror' in UK] • Reel Trouble (1989, by G.H. Stone) • Shoot the Works (1990, by William MacCay) • Foul Play (1990, by Peter Lerangis) • Long Shot (1990, by Megan Stine and H. William Stine) • Fatal Error (1990, by G.H. Stone) • Brain Wash (published in German only in 2011, by Peter Lerangis) • High Strung (published in German only in 2011, by G.H. Stone) ==References==