The Secret of the Terror Castle
Robert Arthur
The Three Investigators (1)
The Mystery of the Stuttering Parrot
The Three Investigators (2)
The Mystery of the Whispering Mummy
The Three Investigators (3)
The Mystery of the Green Ghost
The Three Investigators (4)
The Mystery of the Vanishing Treasure
The Three Investigators (5)
The Secret of Skeleton Island
The Three Investigators (6)
The Mystery of the Fiery Eye
The Three Investigators (7)
The Mystery of the Silver Spider
The Three Investigators (8)
The Mystery of the Screaming Clock
The Three Investigators (9)
The Mystery of the Talking Skull
The Three Investigators (11)