Horror Mystery Sci-Fi
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?
Directed by
William Nigh
Maris Wrixon
Frances Clifford
Boris Karloff
Dr. Bernard Adrian
Billy Bletcher
Short Mustached Posse Man
Donald Kerr
Citizen Carrying Mauled Ape Trainer
I. Stanford Jolley
Ape Trainer
Philo McCullough
Henry Mason
Henry Hall
Sheriff Jeff Halliday
Minerva Urecal
Townswoman
Ray Corrigan
Nabu
Selmer Jackson
Dr. McNulty
Gibson Gowland
Posse Member
George Cleveland
Mr. Howley
Harry C. Bradley
Quinn
Dorothy Vaughan
Mother Clifford
Jessie Arnold
Mrs. Brill
Gene O'Donnell
Danny Foster
Gertrude Hoffmann
Jane the Housekeeper
Julia Griffith
Townswoman
Pauline Drake
Young Girl
Mary Field
Mrs. Mason
Jack Kennedy
Dep. Archie Tomlin
Buddy Swan
Willie Brill

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