The Mystery of the Moaning Cave
William Arden
The Three Investigators (10)
The Mystery of the Headless Horse
The Three Investigators (26)
The Three Investigators in the Mystery of the Deadly Double
William Arden & Robert Arthur
The Three Investigators (28)
The Three Investigators in the Mystery of the Dead Man's Riddle
The Three Investigators (22)
The Three Investigators in the Secret of Phantom Lake
The Three Investigators (19)
The Three Investigators in the Secret of the Crooked Cat
The Three Investigators (13)
The Three Investigators in the Mystery of the Purple Pirate
The Three Investigators (33)
Alfred Hitchcock and the Three Investigators in the Mystery ...
William Arden & Alfred Hitchcock & Robert Arthur
The Three Investigators (25)
The Three Investigators (18)
The Mystery of the Laughing Shadow
The Three Investigators (12)