Trailer
Images
 | John Carradine as Dr. Charles Conway |
 | Myron Healey as Mark Houston |
 | Allison Hayes as Grace Thomas |
 | Marilyn Buferd as Dr. Sharon Gilchrist |
 | Tor Johnson as Lobo |
 | Arthur Batanides as Danny Green |
 | Sally Todd as Natalie Andries |
 | Harry Fleer as Harry Jedrow |
 | Roy Gordon as Dr. Loren Wright |
 | Guy Prescott as Police Captain George Reagan |
 | Raymond Guth as Police Officer Miller |
| Paul McWilliams as Police Officer Ed |
| Gloria Petroff as Screaming Woman |
| Karl Johnson as Monster in Basement (uncredited) |
 | Harry Wilson as Monster in Basement (uncredited) |
| Directing | |
| Boris Petroff | Director |
Writing | |
| Jane Mann | Screenplay |
| 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 |
| 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 |
