

"From a million years back...Horror explodes into today!"
Anthropologist Dr. Brockton unearths a primitive troglodyte -- an Ice Age "missing link": half-caveman, half-ape -- in a local cave. Through medical experimentation, she manages to communicate with him and domesticate him before he's let loose by an irate land developer and goes on a rampage, terrorizing the local citizenry.
Dr. Brockton

Sam Murdock

Inspector Greenham

Anne Brockton

Malcolm Travers
Cliff

Magistrate

Dr. Selbourne

Bill
Dr. Richard Warren

Colonel Vickers
Alan Davis

Little Girl

Reporter
Trog
Anaesthetist
Police Officer (uncredited)