- Country: USA
- Genres: Crime, Drama, Film-Noir
- Release: 1940-04-12
- Director: Arthur Lubin
- Writers: Curt Siodmak , Eric Taylor
- Language: English
- Stars: Boris Karloff , Bela Lugosi , Stanley Ridges , Stanley Ridges , Anne Nagel , Anne Gwynne , Virginia Brissac , Edmund MacDonald , Paul Fix , Murray Alper , Jack Mulhall
- Runtime: 70 min
- Awards: 1 win
- AKA: Black Friday (United Kingdom) , Viernes 13 (Mexico) , Crni petak , Sexta-Feira, 13 (Portugal, Portuguese Republic) , Viernes 13 (Venezuela) , Schwarzer Freitag , Черен петък (Bulgaria) , Viernes 13 (Spain) , Sexta-Feira 13 (Brazil) , Friday the Thirteenth (India) , Black Friday (Canada) , Fekete péntek (Hungary) , Svarta fredagen (Sweden) , Black Friday , Vendredi 13 (France, French Republic) , Чёрная пятница , Чорна п'ятниця (Ukraine) , Vinerea neagră (Romania) , Friday the Thirteenth (United States of America) , Black Friday (United States of America) , Viernes 13 (Argentina) , Ta eglimata enos allou (Greece) , Crni petak (Croatia)
- Plot: When his friend Professor Kingsley is at deaths door, brain surgeon Dr. Sovac saves his life by means of an illegal operation that transplants part of injured gangster Red Cannon's brain. Unfortunately, the operation has a disastrous Jeckll and Hyde side effect and under certain conditions the persona of Cannon emerges. Sovac soon learns of the duel personality and of half a million dollars the gangster has hidden away. He attempts to find the money through the manipulation of his friend, an attempt that brings Kingsley closer to madness as he alternates between a meek professor of English and a brutal gangster out for murderous revenge on those who tried to kill him.
- IMDB:tt0032258
Black Friday Cast · · · ALL
Arthur Lubin
Director
Stanley Ridges
Prof. George Kingsley / Red Cannon
Boris Karloff
Dr. Ernest Sovac
Bela Lugosi
Eric Marnay
Anne Nagel
Sunny Rogers
Anne Gwynne
Jean Sovac
Virginia Brissac
Mrs. Margaret Kingsley
Edmund MacDonald
Frank Miller
Paul Fix
William Kane
Murray Alper
Bellhop
Jack Mulhall
Bartender
Raymond Bailey
Louis Devore
Joe King
Chief of Police
John Kelly
Taxi Driver
Jessie Arnold
Nurse
Tommy Conlon
Student
Franco Corsaro
Club Maitre d' (uncredited)
James Craig
Reporter Ernst Gives Notes To
Kernan Cripps
Detective
Eddie Dunn
Det. Farnow
Edward Earle
Detective
Harry Hayden
Prison Doctor
Frank Jaquet
Fat Man in Bar
Ellen Lowe
Midtown Hotel Maid
Jerry Marlowe
Cabbie
Wallace Reid Jr.
Student