A brilliant but deranged neurosurgeon becomes obsessively fixated on a judge's daughter. With the help of an escaped criminal whose face he has surgically deformed, the mad man lures her, her father, and her fiancé to his isolated, castle-like home.

Cast: Boris Karloff, Bela Lugosi, Lester Matthews, Irene Ware, Samuel S. Hinds, Spencer Charters