The Killers from Space in this low-budget sci-fier are a group of aliens bent on conquering the earth. To this end, they overtake the mind and body of atomic scientist Peter Graves, using the poor man as a combination spy and saboteur. When Graves realizes this, he tries to warn mankind, but no one believes him. Marching defiantly back to the aliens' Bronson Canyon headquarters, where the slimy villains are busily syphoning off electrical power from a nearby generator, Graves vows to stop the extraterrestrials at any cost...including his own life (or what there's left of it). The makeup used for the aliens is laughable, but the film works so long as it concentrates on Graves' plight. Produced and directed by W. Lee Wilder, the brother of the more celebrated Billy Wilder, Killers from Space was distributed in the US by RKO Radio.
~ Hal Erickson, All Movie Guide