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.

• Herman Cohen Productions
• Warner Bros. Pictures
• Joan Crawford
• Michael Gough
• Bernard Kay
• Kim Braden
• David Griffin
• John Hamill
• Thorley Walters
• Jack May