Black Friday (1940)

Dr. Ernest Sovac is taken from his cell for his execution, but is able to give notes to a reporter, which recount his story, as he is led to a chamber. Sometime earlier, Sovac's best friend, bookish college professor George Kingsley, is run down while crossing a street. In order to save his friend's life, Sovac implants part of another man's brain into the professor's. Unfortunately, the other man was a gangster who was involved in the accident and was apparently heading for the electric chai...