The Mysterious Monsters (1976) is a Documentary, Horror, Fantasy film that follows 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. Currently, you can watch The Mysterious Monsters on History Vault, FlixFling. Streaming availability may vary by country and platform over time. It has a user rating of 5.8 out of 10 from 4 votes. Fans of documentary movies may also want to explore similar titles below.