- Country: USA
- Genres: Horror, Mystery
- Release: 1942-04-17
- Director: William Nigh
- Writers: Clarence Upson Young
- Language: English
- Stars: Patric Knowles (1911–1995) , Lionel Atwill , Anne Gwynne , Samuel S. Hinds (1875–1948) , Mona Barrie , Shemp Howard , Paul Cavanagh , Edmund MacDonald , Mantan Moreland , John Gallaudet
- Runtime: 66 min
- Awards: N/A
- AKA: El extraño doctor Rx (Spain) , Den mystiske doktor Rx (Sweden) , O Estranho Caso do Dr. Rx (Brazil) , O Estranho Caso do Dr. R.X. (Portugal, Portuguese Republic) , The Strange Case of Doctor Rx , Dr. Rx (United States of America) , La sombra fatídica del doctor Rx (Mexico) , The Strange Case of Doctor Rx (United States of America) , Satanikos engefalos (Greece) , The Strange Case of Doctor Rx (United Kingdom)
- Plot: After five men previously acquitted of various criminal charges are murdered by a mysterious avenger known as Dr. Rx, police Inspector Hurd and Sergeant Sweeney ask private investigator Jerry Church to help them on the case. He takes the case after talking to Dudley Crispin, a brilliant attorney who had defended three of the murdered men. Crispin gains an acquittal for his latest client, Zarini, but the latter falls dead in the courtroom. Jerry marries Kit Logan, who becomes frightened and persuades Jerry to quit the case. He stays however after Ernie Paul, suspected of the Zarini murder, threatens to "get" him if he does not stay on and clear Paul. Dr. Rx captures Jerry and attempts to frighten him into insanity by strapping him on an operating table, and pretending to exchange the detective's brain for a gorilla.
- IMDB:tt0035386
The Strange Case of Doctor Rx Cast · · · ALL
William Nigh
Director
Patric Knowles
(1911–1995)
Private Detective Jerry Church
Lionel Atwill
Dr. Fish
Anne Gwynne
Kit Logan Church
Mantan Moreland
Horatio B.Fitz Washington
Samuel S. Hinds
(1875–1948)
Dudley Crispin
Shemp Howard
Det. Sgt. Sweeney
Paul Cavanagh
John Crispin
Edmund MacDonald
Det. Capt. Bill Hurd
John Gallaudet
Ernie Paul
William Gould
Dist. Atty. Mason
Leyland Hodgson
Thomas, the butler
Matty Fain
Tony Zarini
Mary Gordon
Mrs. Scott
Selmer Jackson
Judge
Jan Wiley
Lily