- Country: USA
- Genres: Crime, Horror, Sci-Fi
- Release: 1940-09-17
- Director: Nick Grinde
- Writers: Robert Hardy Andrews , Karl Brown
- Language: English
- Stars: Boris Karloff , Evelyn Keyes (1916–2008) , Bruce Bennett , Edward Van Sloan , Ben Taggart , Pedro de Cordoba , Wright Kramer , Bertram Marburgh , Don Beddoe , Robert Fiske
- Runtime: 62 min
- Awards: N/A
- AKA: Before I Hang , O Rei da Morte (Portugal, Portuguese Republic) , Прежде, чем меня повесят , El mago de la muerte (Mexico) , Înainte să fiu spânzurat (Romania) , Before I Hang (United States of America) , Prima che m'impicchino (Italy) , El mago de la muerte (Spain) , O Mago da Morte (Brazil) , Before I Hang (Canada) , Before I Hang (United Kingdom)
- Plot: A physician on death row for a mercy killing is allowed to experiment on a serum using a criminals' blood, but secretly tests it on himself. He gets a pardon, but finds out he's become a Jekyll-&-Hyde.
- IMDB:tt0032245
Before I Hang Cast · · · ALL
Nick Grinde
Director
Boris Karloff
Dr. John Garth
Evelyn Keyes
(1916–2008)
Martha Garth
Bruce Bennett
Dr. Paul Ames
Don Beddoe
Capt. McGraw
Edward Van Sloan
Dr. Ralph Howard
Ben Taggart
Warden Thompson
Pedro de Cordoba
Victor Sondini
Wright Kramer
George Wharton
Bertram Marburgh
Stephen Barclay
Robert Fiske
District Attorney
Kenneth MacDonald
Anson, Prison Guard
Ernie Adams
Sam - Hospital Prison Orderly
Frederick Burton
Governor Prentiss
Edward Earle
Dr. Nichols
Richard Fiske
Mandish
George McKay
Reardon
John Tyrrell
Sanders
Jack Cheatham
Patrolman Olson
Charles Trowbridge
Judge Braden
Bert Moorhouse
Cousel at Defense Table
Sam Harris
(II)
(1877–1969)
Courtroom Spectator
Edmund Mortimer
Courtroom Spectator
Stanley Brown
Prison Gate Guard
Eddie Laughton
Guard
James T. Mack
Butler