On screen
Cast
17 credited performers
Artwork unavailable
Edward Connell
David Fielding
Artwork unavailable
Barbara Hewitt
Susan Turner
Artwork unavailable
Jack Woods
Asmodeus
Frank Bonner
Jim Hudson
Artwork unavailable
Robin Christopher
Vicki
Artwork unavailable
James Phillips
Reporter Sloan
Artwork unavailable
Fritz Leiber Jr.
Dr. Arthur Watermann
Artwork unavailable
Patrick Burke
Doctor Branson
Artwork unavailable
Sharon Gray
Nurse
Artwork unavailable
Louis Clayton
Old man in cave
Artwork unavailable
Norvelle Brooks
Character not listed
Artwork unavailable
Irving L. Lichtenstein
Character not listed
Artwork unavailable
James Dwion
The Orderly
Forrest J. Ackerman
Doctor on Tape Recorder (voice) (uncredited)
Artwork unavailable
Jack H. Harris
Detective Harrison (uncredited)
Artwork unavailable
Chuck Niles
Reporter Sloan (voice) (uncredited)
Artwork unavailable
Jim Duron
The Green Giant