All Cast
Peter Graves
Himself - Narrator
Peter Hurkos
Himself
William Stenberg
Himself
Sidney Walter
Himself (as Dr. Sidney Walter)
Jerilou Whelchel
Herself
Roger Patterson
Archive Footage
Peter C. Byrne
Self
Grover Krantz
Self
Adrian Shine
Loch Ness Investigator
Robert W. Morgan
Self