On screen
Cast
12 credited performers
Artwork unavailable
Ray Molina
Dr. Blake
Artwork unavailable
Ebby Rhodes
Dr. Blake's Daughter
Artwork unavailable
Ern Dugo
Prof. Grant
Artwork unavailable
Forest Duke
Dr. Bernstein
Artwork unavailable
Will Long
Prof. Larsen
Artwork unavailable
Ben Smith
Prof. Long
Artwork unavailable
Chuck Alford
Capt. Popejoy
Artwork unavailable
Ross Thompson
Actor
Artwork unavailable
Lalo Rivers
Character not listed
Artwork unavailable
Ernie Chavez
Character not listed
Artwork unavailable
Carme Petrillo
Character not listed
Philip Ahn
Mao Tse Tung (uncredited)