

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?
William Nigh
Jane the Housekeeper

Jessie Arnold
Mrs. Brill

Billy Bletcher
Short Mustached Posse Man

Harry C. Bradley
Quinn

George Cleveland
Mr. Howley

Ray Corrigan
Nabu