Jungle Beast or Man of Science?

Dr. Bernard Adrian is a kindly scientist who seeks to cure a young woman's polio. He needs human spinal fluid to complete the formula for his experimental serum. Meanwhile, a vicious circus ape has broken out of its cage, and is terrorizing the townspeople. Can there be a connection?

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Main Cast: Boris Karloff, Maris Wrixon, Gene O'Donnell, Dorothy Vaughan, Henry Hall, Selmer Jackson, Gertrude Hoffmann, Jessie Arnold, Billy Bletcher, Harry C. Bradley

Director: William Nigh

Writers: Curt Siodmak, Richard Carroll

Editor: Russell F. Schoengarth

Cinematographer: Harry Neumann

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