Possible sequel Edit
Universal intended to make a sequel to the 1943 movie. All the cast said they would gladly return except for Claude Rains whom did not want to be typecast in Horror Films. Universal decided to make a follow up film rather than a sequel. It was called The Climax and featured Boris Karloff as a mad hypnontist. Many themes from the 1943 movie were in this film. The fact that Universal wanted to make a sequel leaves the endless question; did Erique really die?