The Return of Doctor X (1939)
Genres: Science Fiction, Horror
Cast: Wayne Morris, Rosemary Lane, Humphrey Bogart
The Return of Doctor X is a 1939 American science fiction-horror film directed by Vincent Sherman and starring Wayne Morris, Rosemary Lane, and Humphrey Bogart as the title character. It was based on the short story "The Doctor's Secret" by William J. Makin. Despite supposedly being a sequel to Doctor X (1932), also produced by Warner Bros., the films are unrelated.