A remake of the 1927 horror film "The Wizard". Dr. Larry Forbes arrives in a remote French village to visit his fiancée who lives with her scientist father Dr. Renault and his Ape-like manservant Noel. Several Murders coincide with Dr. Forbes arrival, with clues pointing in multiple directions.
Unfortunately the movie Dr. Renault's Secret is not yet available on HBO Max.
| Writing | Robert F. Metzler | Screenplay |
| Writing | William Bruckner | Screenplay |
| Directing | Harry Lachman | Director |
| Camera | Virgil Miller | Director of Photography |
| Crew | Ray Corrigan | Stunts |
| Sound | Eugene Grossman | Sound |
| Art | Nathan H. Juran | Art Direction |
| Sound | Harry M. Leonard | Sound |
| Production | Sol M. Wurtzel | Executive Producer |
| Sound | Emil Newman | Original Music Composer |
| Art | Richard Day | Art Direction |
| Art | Thomas Little | Set Decoration |
| Sound | David Raksin | Original Music Composer |
| Editing | Fred Allen | Editor |
