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