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					 			      	Black Friday (1940) - IMDb
					 			      	 
 Directed by Arthur Lubin.  With Boris Karloff, Bela Lugosi, Stanley Ridges, Anne Nagel. Dr. Sovac transplants the brain of a gangster into his professor friend's body to save his life, but there is a side effect that causes a dangerous split personality. https://www.imdb.com/title/tt0032258/
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					 			      	Black Friday (1940 film) - Wikipedia
					 			      	 
 Black Friday is a 1940 American science fiction film starring Boris Karloff. Béla Lugosi, although second-billed, has only a small part in the film and does not appear with Karloff. https://en.wikipedia.org/wiki/Black_Friday_(1940_film)
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					 			      	Black Friday (1940) - Overview - TCM.com
					 			      	 
 Overview of Black Friday, 1940, directed by Arthur Lubin, with Boris Karloff, Bela Lugosi, Stanley Ridges, at Turner Classic Movies http://www.tcm.com/tcmdb/title/68869/Black-Friday/
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					 			      	DVD Review - Black Friday (1940)
					 			      	 
 Black Friday, 1940 Directed by Arthur LubinStarring Boris Karloff, Bela Lugosi, Stanley Ridges SYNOPSIS: Dr. Sovac transplants the brain of a gangster into his professor friend’s body to save his life, but there is a side effect that causes a dangerous split personality. https://www.flickeringmyth.com/2013/06/dvd-review-black-friday-1940/
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					 			      	Black Friday (1934) - Rotten Tomatoes
					 			      	 
 When his friend Professor Kingsely (Ridges) is at deaths door, brain surgeon Dr. Sovac (Karloff) saves his life by means of an illegal operation that transplants part of injured gangster Red Cannon's brain. https://www.rottentomatoes.com/m/black_friday
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					 			      	Horror Reviews - Black Friday (1940)
					 			      	 
 Horror Reviews - Oh, the Horror! http://www.oh-the-horror.com/page.php?id=1005
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					 			      	Black Friday (1940) directed by Arthur Lubin • Reviews, film + cast • Letterboxd
					 			      	 
 When his friend Professor Kingsely (Ridges) is at deaths door, brain surgeon Dr. Sovac (Karloff) saves his life by means of an illegal operation that transplants part of injured gangster Red Cannon's brain. Unfortunately, the operation has a disasterous 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. https://letterboxd.com/film/black-friday/