On screen
Cast
11 credited performers
Peter Graves
Himself - Narrator
Artwork unavailable
Peter Hurkos
Himself
Artwork unavailable
William Stenberg
Himself
Artwork unavailable
Sidney Walter
Himself (as Dr. Sidney Walter)
Artwork unavailable
Jerilou Whelchel
Herself
Artwork unavailable
Roger Patterson
Archive Footage
Artwork unavailable
Peter C. Byrne
Self
Artwork unavailable
Grover Krantz
Self
Artwork unavailable
Adrian Shine
Loch Ness Investigator
Artwork unavailable
Robert W. Morgan
Self
Artwork unavailable
John Green
Self