Elenco
Ed Nelson
Dr. Paul Kettering
Joanna Lee
Alice Summers
Cornelius Keefe
Senator Walter K. Powers
Alan Jay Factor
Glenn Cameron
Jody Fair
Elaine Cameron
David Hughes
Dr. Wyler
Robert Ball
Dan Walker
Phil Posner
Sheriff
Orville Sherman
Mayor Cameron
Henry Randolph
Telegrapher
Hampton Fancher
Zombie (uncredited)
Leonard Nimoy
Professor Cole
Doug Banks
Doctor
Saul Bronson
Prof. Helsingman
Equipe
Bruno VeSota
Director
Gordon Urquhart
Screenplay
Stanley Bickman
Associate Producer
Ed Nelson
Producer
Burt Shonberg
Art Direction
Alan Trumble
Makeup Artist
Lawrence Raimond
Director of Photography
Carlo Lodato
Editor
Roger Corman
Executive Producer
F. Amos Powell
Production Manager
Mike Murphy
Assistant Director
James Fullerton
Sound
Tom Jonson
Original Music Composer