The Mystery of the Cranky Collector
M. V. Carey & Robert Arthur
Alfred Hitchcock and The Three Investigators (43)
The Mystery of Wreckers' Rock
William Arden & Robert Arthur
Alfred Hitchcock and The Three Investigators (42)
The Mystery of the Creep-Show Crooks
Alfred Hitchcock and The Three Investigators (41)
The Mystery of the Rogues' Reunion
Marc Brandel & Robert Arthur
Alfred Hitchcock and The Three Investigators (40)
The Mystery of the Trail of Terror
Mary V. Carey & Robert Arthur
Alfred Hitchcock and The Three Investigators (39)
The Mystery of the Two-Toed Pigeon
Alfred Hitchcock and The Three Investigators (37)
The Mystery of the Kidnapped Whale
Alfred Hitchcock and The Three Investigators (35)
The Mystery of the Missing Mermaid
Alfred Hitchcock and The Three Investigators (36)
The Mystery of the Purple Pirate
Alfred Hitchcock and The Three Investigators (33)
The Mystery of the Blazing Cliffs
Alfred Hitchcock and The Three Investigators (32)
The Mystery of Death Trap Mine
M. V. Carey & Robert Arthur & Alfred Hitchcock
Alfred Hitchcock and The Three Investigators (24)
The Mystery of the Dead Man's Riddle
Alfred Hitchcock and The Three Investigators (22)
The Mystery of Monster Mountain
Alfred Hitchcock and The Three Investigators (20)
The Mystery of the Singing Serpent
Alfred Hitchcock and The Three Investigators (17)
The Mystery of the Flaming Footprints
Alfred Hitchcock and The Three Investigators (15)
The Mystery of the Talking Skull
Robert Arthur
Classic Three Investigators (10)