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.
| Writing | Peter Bryan | Original Story |
| Writing | Aben Kandel | Screenplay |
| Directing | Freddie Francis | Director |
| Editing | Oswald Hafenrichter | Editor |
| Production | Maude Spector | Casting |
| Art | Geoffrey Tozer | Art Direction |
| Production | Herman Cohen | Producer |
| Writing | John Gilling | Original Story |
| Camera | Desmond Dickinson | Director of Photography |
| Production | Harry Woolveridge | Associate Producer |
| Sound | John Scott | Original Music Composer |
