The Mysterious Monsters [46970] Released: 1976-07-01 Revenue: $0 Budget: $0 Profit: $0 Runtime: 86 mins Popularity: 0.6504 Vote Average: 5.8 Vote Count: 4 Overview: 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. Cast [11] Peter GravesHimself - Narrator Peter HurkosHimself William StenbergHimself Sidney WalterHimself Jerilou WhelchelHerself Roger PattersonArchive Footage Peter C. ByrneSelf Grover KrantzSelf Adrian ShineLoch Ness Investigat Robert W. MorganSelf John GreenSelf Trailers