The Mysterious Monsters

Peter Graves

Himself - Narrator

Peter Hurkos

Himself

William Stenberg

Himself

Sidney Walter

Himself (as Dr. Sidney Walter)

Jerilou Whelchel

Herself

Roger Patterson

Archive Footage

Peter C. Byrne

Self

Grover Krantz

Self

Adrian Shine

Loch Ness Investigator

Robert W. Morgan

Self

John Green

Self