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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?
Keywords
circus
gorilla
wheelchair
mad scientist
mad doctor
woman in wheelchair
killer ape
Casts

Boris Karloff
Dr. Bernard Adrian

Maris Wrixon
Frances Clifford

Gene O'Donnell
Danny Foster

Dorothy Vaughan
Mother Clifford

Henry Hall
Sheriff Jeff Halliday

Selmer Jackson
Dr. McNulty

Gertrude Hoffmann
Jane the Housekeeper

Jessie Arnold
Mrs. Brill

Billy Bletcher
Short Mustached Posse Man

Harry C. Bradley
Quinn

George Cleveland
Mr. Howley

Ray Corrigan
Nabu
Pauline Drake
Young Girl

Mary Field
Mrs. Mason

Gibson Gowland
Posse Member

Julia Griffith
Townswoman

I. Stanford Jolley
Ape Trainer
Stan Jolley
Boy in Soda Shop
Jack Kennedy
Dep. Archie Tomlin

Donald Kerr
Citizen Carrying Mauled Ape Trainer

Philo McCullough
Henry Mason
Buddy Swan
Willie Brill

Minerva Urecal
Townswoman
Crews

Curt Siodmak
Adaptation

Curt Siodmak
Screenplay

William Nigh
Director
Richard Carroll
Screenplay
Russell F. Schoengarth
Editor
Harry Neumann
Director of Photography
Charles J. Bigelow
Production Manager
William T. Lackey
Associate Producer
Gordon Bau
Makeup Artist
Edward J. Kay
Original Music Composer
Edward J. Kay
Music Director
Allen K. Wood
Assistant Director
Karl Zint
Sound Recordist
Adam Shirk
Theatre Play
Backdrops & Posters
