- HD 1080
- Runtime: 69m.
- Status: Released
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- Languages: en
- Country: United States of America
- Director: Robert Florey
- Stars: Donald Woods, Margaret Lindsay, C. Aubrey Smith, Henry O'Neill, Robert Barrat
- keywords: psychiatrist, dagger, hypnotism, borgia
- Production_studio: The Vitaphone Corporation, Warner Bros. Pictures
- Slogan: See how medical science SOLVES Europe's most baffling crime
- The The Florentine Dagger is featured in the top rankings of 1935
- #20 in Top Crime Movies of 1935
- #14 in Top Mystery Movies of 1935
A playwright descended from the Borgia family becomes a murder suspect.
