David Stuart
Lon Chaney Jr.
Heather Hayden
Jean Parker
John Elliott
Allen Fox
David Hoffman
Rex Lease
Leslie K. O'Pace
Beatrice Roberts
Dr. Alan Bittaker
Paul Kelly
Police Capt. Drury
Thomas Gomez
Dr. Sam Welles
Jonathan Hale
Dr. Stanley Hayden
Edward Fielding
Nick Phillips
George Meeker
Hayden's Lawyer
Pierre Watkin
Police Guard Moriarty
Eddie Dunn
Tanya Czoraki
Acquanetta
Director
Reginald Le Borg
Screenplay
Dwight V. Babcock
Set Decoration
Russell A. Gausman
Leigh Smith
Sound Director
Bernard B. Brown
Art Direction
Martin Obzina
Visual Effects
John P. Fulton
Costume Design
Vera West
Sound Engineer
William Hedgcock
John B. Goodman
Editor
Milton Carruth
Music
Paul Sawtell
Director of Photography
Paul Ivano
Associate Producer
Will Cowan
Producer
Ben Pivar
Assistant Director
Seward Webb