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.
as Dr. Brockton
as Sam Murdock
as Inspector Greenham
as Anne Brockton
as Malcolm Travers
as Cliff
as Magistrate
as Dr. Selbourne
as Bill
as Dr. Richard Warren
as Colonel Vickers
as Alan Davis
as Little Girl
as Reporter
as Trog
as Anaesthetist
as Police Officer (uncredited)