A group of people find themselves trapped in a creepy mansion, complete with secret passageways, a mad doctor and a murderous gorilla.
You can now watch Who Killed Doc Robbin? online on the following streaming providers in the United States.
| Directing | Bernard Carr | Director |
| Writing | Maurice Geraghty | Screenplay |
| Production | Hal Roach, Jr. | Executive Producer |
| Writing | Dorothy Davenport | Screenplay |
| Production | Robert F. McGowan | Producer |
| Crew | John W. Boyle | Cinematography |
| Editing | Art Seid | Editor |
| Production | Menifee Johnstone | Casting Director |
| Art | Jerome Pycha Jr. | Art Direction |
| Art | William Stevens | Set Decoration |
| Costume & Make-Up | Harry Black | Costume Design |
| Costume & Make-Up | Burris Grimwood | Makeup Artist |
| Costume & Make-Up | Loretta Francel | Hair Designer |
| Production | Sidney S. Van Keuren | Production Manager |
| Directing | James Lane | Assistant Director |
| Directing | Jack Temple | Assistant Director |