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