A mad doctor uses patients at his isolated psychiatric institute as subjects in his attempts to create longevity by surgically installing an artificial gland in their skulls.
Unfortunately the movie The Unearthly is not yet available on HBO Max.
| Directing | Boris Petroff | Director |
| Writing | John D.F. Black | Screenplay |
| Writing | Jane Mann | Screenplay |
| Production | Betty Sinclair | Production Manager |
| Production | Robert A. Terry | Associate Producer |
| Writing | Jane Mann | Original Story |
| Camera | W. Merle Connell | Director of Photography |
| Sound | Henry Vars | Original Music Composer |
| Production | Boris Petroff | Producer |
| Art | Daniel Hall | Art Direction |
| Art | Mowbray Berkeley | Set Decoration |
| Costume & Make-Up | Harry Thomas | Makeup Designer |
