"A mad doctor uses patients at his isolated psychiatric institute as subjects in his attempts to create longevity by surgically installing an artificial gland in their skulls."
John Carradine
as Dr. Charles Conway
Myron Healey
as Mark Houston
Allison Hayes
as Grace Thomas
Marilyn Buferd
as Dr. Sharon Gilchrist
Tor Johnson
as Lobo
Arthur Batanides
as Danny Green
Sally Todd
as Natalie Andries
Harry Fleer
as Harry Jedrow
Roy Gordon
as Dr. Loren Wright
Guy Prescott
as Police Captain George Reagan
Raymond Guth
as Police Officer Miller
Paul McWilliams
as Police Officer Ed
Gloria Petroff
as Screaming Woman
Karl Johnson
as Monster in Basement (uncredited)
Harry Wilson
Boris Petroff
Director
Jane Mann
Screenplay
John D.F. Black
Original Story
Producer
Robert A. Terry
Associate Producer
Henry Vars
Original Music Composer
W. Merle Connell
Director of Photography
Daniel Hall
Art Direction
Mowbray Berkeley
Set Decoration
Betty Sinclair
Production Manager
Harry Thomas
Makeup Designer
W.T. Zacha
Wardrobe Supervisor
Philip Mitchell
Sound
Paul Grancell
Electrician
Art Manikin
Grip
Tony Portoghese
Property Master
Ben Wetzler
Camera Operator
Richard C. Currier
Supervising Editor
Michael Terr
Music Supervisor