Dr. Charles Conway
John Carradine
Mark Houston
Myron Healey
Police Officer Miller
Raymond Guth
Police Officer Ed
Paul McWilliams
Screaming Woman
Gloria Petroff
Monster in Basement (uncredited)
Karl Johnson
Harry Wilson
Grace Thomas
Allison Hayes
Dr. Sharon Gilchrist
Marilyn Buferd
Lobo
Tor Johnson
Danny Green
Arthur Batanides
Natalie Andries
Sally Todd
Harry Jedrow
Harry Fleer
Dr. Loren Wright
Roy Gordon
Police Captain George Reagan
Guy Prescott
Production Manager
Betty Sinclair
Director
Boris Petroff
Screenplay
Jane Mann
John D.F. Black
Producer
Art Direction
Daniel Hall
Original Story
Original Music Composer
Henry Vars
Set Decoration
Mowbray Berkeley
Associate Producer
Robert A. Terry
Director of Photography
W. Merle Connell
Makeup Designer
Harry Thomas