Anthropologist Dr Brockton unearths a primitive troglodyte — an Ice Age 'missing link': half-caveman, half-ape — in a local cave. Through experimentation, she manages to communicate with and domesticate him before he's released by an irate land developer and goes on a rampage, terrorising 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)
