The Ghost of Frankenstein 1942
Directed by Erle C. Kenton | Starring: Bela Lugosi, Colin Clive, Lon Chaney Jr., Ralph Bellamy
Frankenstein's unscrupulous colleague, Dr. Bohmer, plans to transplant Ygor's brain so he can rule the world using the monster's body, but the plan goes sour when he turns malevolent and goes on a rampage.