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
