The discovery of a perfectly preserved caveman prompts a mad scientist to attempt a daring brain transplant.
| Directing | Phil Rosen | Director |
| Production | Jack Dietz | Producer |
| Production | Sam Katzman | Producer |
| Writing | Robert Charles | Screenplay |
| Production | Barney A. Sarecky | Associate Producer |
| Camera | Marcel Le Picard | Director of Photography |
| Editing | Carl Pierson | Editor |
| Directing | Arthur Hammond | Assistant Director |
| Art | Dave Milton | Set Designer |
| Sound | Glen Glenn | Sound Engineer |
| Crew | Ray Mercer | Special Effects |
| Sound | Edward J. Kay | Music Director |
