Boris Karloff (center, right) stars in "Black Friday," a chilling story of a man (Karloff) who puts a gangster's brain into a professor's body.

Bela Lugosi & Anne Nagel "Black Friday" 1940 Universal

Boris Karloff, Bela Lugosi, Harry Hayden, and Frank Sheridan in Black Friday (1940)

Boris Karloff and James Craig in Black Friday (1940)

Anne Gwynne and Stanley Ridges in Black Friday (1940)

Bela Lugosi, Raymond Bailey, Paul Fix, and Edmund MacDonald in Black Friday (1940)

Boris Karloff and Stanley Ridges in Black Friday (1940)

Boris Karloff and Bela Lugosi in Black Friday (1940)

Boris Karloff, Bela Lugosi, Anne Gwynne, Edmund MacDonald, Anne Nagel, and Stanley Ridges in Black Friday (1940)

Boris Karloff and Bela Lugosi in The Black Cat (1934)