University professor George Kingsley is struck by gangsters while crossing the street, leaving him with brain damage and one of the gangsters, Cannon, paralyzed. Kingsley's friend Dr. Sovac attends to both men, and when Cannon offers him a reward for aiding his recovery, Kovac transplants part of Cannon's brain into the dying Kingsley's skull, creating a dual personality.

• DirectorArthur Lubin
• Release29 February 1940
• Genre
  Science Fiction / Crime
• Duration1h 10m
• Budget$125,750
• Revenue?
• Rate
  

  6.009
  53 reviews
• Productions

  Universal Pictures