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 | Jane Mann | Screenplay |
| Writing | John D.F. Black | Screenplay |
| Production | Boris Petroff | Producer |
| Art | Daniel Hall | Art Direction |
| Writing | Jane Mann | Original Story |
| Sound | Henry Vars | Original Music Composer |
| Production | Betty Sinclair | Production Manager |
| Art | Mowbray Berkeley | Set Decoration |
| Production | Robert A. Terry | Associate Producer |
| Camera | W. Merle Connell | Director of Photography |
| Costume & Make-Up | Harry Thomas | Makeup Designer |
| Costume & Make-Up | W.T. Zacha | Wardrobe Supervisor |
| Sound | Philip Mitchell | Sound |
| Lighting | Paul Grancell | Electrician |
| Camera | Art Manikin | Grip |
| Art | Tony Portoghese | Property Master |
| Camera | Ben Wetzler | Camera Operator |
| Editing | Richard C. Currier | Supervising Editor |
| Sound | Michael Terr | Music Supervisor |
