Jack Woods
Director
Dennis Muren
Director
Mark Thomas McGee
Story
Jack Woods
Screenplay
Ed Begley Jr.
Camera Operator
Bradley Lane
Sound Mixer
Jaime Mendoza-Nava
Original Music Composer
Jack H. Harris
Producer
Dennis Muren
Associate Producer
Mike Hoover
Director of Photography
Jim Danforth
Special Effects
David Allen
Special Effects
Dennis Muren
Special Effects
Sam Altonian
Production Manager
Robynne Hoover
Makeup Artist
John Joyce
Editor
John Caper Jr.
Music Supervisor
Edward Connell
David Fielding (as Skip Shimer)
Barbara Hewitt
Susan Turner
Jack Woods
Asmodeus
Frank Bonner
Jim Hudson (as Frank Boers Jr.)
Robin Christopher
Vicki (as Robin Snider)
James Phillips
Reporter Sloan (as Jim Phillips)
Fritz Leiber Jr.
Dr. Arthur Watermann (as Fritz Leiber)
Patrick Burke
Doctor Branson
Sharon Gray
Nurse
Louis Clayton
Old man in cave
Norvelle Brooks
Irving L. Lichtenstein
James Dwion
The Orderly
Forrest J. Ackerman
Doctor on Tape Recorder (voice) (uncredited)
Jack H. Harris
Detective Harrison (uncredited)
Chuck Niles
Reporter Sloan (voice) (uncredited)
Jim Duron
The Green Giant
