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.

• Sunn Classic Pictures
• Peter Graves
• Peter Hurkos
• William Stenberg
• Sidney Walter
• Jerilou Whelchel
• Roger Patterson
• Peter C. Byrne
• Grover Krantz