- HD 1080
- Runtime: 58m.
- Status: Released
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- Languages: en
- Country: United States of America
- Director: Harry Lachman
- Stars: J. Carrol Naish, Shepperd Strudwick, Lynne Roberts, George Zucco, Bert Roach
- keywords: experiment, gorilla, investigation, plastic surgery, mad scientist, murder, series of murders, dog attack, human experiment, bastille day
- Production_studio: 20th Century Fox
- Slogan: His animal instinct cannot be tamed!
- The Dr. Renault's Secret is featured in the top rankings of 1942
- #54 in Top Romance Movies of 1942
- #18 in Top Thriller Movies of 1942
- #32 in Top Mystery Movies of 1942
- #14 in Top Horror Movies of 1942
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.