One of the many notorious 70's "unknown" documentaries, The Mysterious Monsters covers topics such as Bigfoot and the Loch Ness Monster. Pictures, sounds, and videos of these two monsters are examined by Peter Graves, the host. Psychics, hypnotism, and the history of Bigfoot in many ancient cultures is also scrutinized.
Peter Graves
as Himself - Narrator
Peter Hurkos
as Himself
William Stenberg
as Himself
Sidney Walter
as Himself (as Dr. Sidney Walter)
Jerilou Whelchel
as Herself
Roger Patterson
as Archive Footage
Peter C. Byrne
as Self
Grover Krantz
as Self
Adrian Shine
as Loch Ness Investigator
Robert W. Morgan
as Self
John Green
as Self
