Not of This Earth (1957)
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Not of This Earth is a 67-minute, 1957 American black-and-white science fiction film written by Charles B. Griffith and Mark Hanna. The film was produced and directed by Roger Corman for his Los Altos Productions and was distributed by Allied Artists Pictures Corporation. The film depicts the dark deeds of an alien intruder who hides under the name of Mr. Johnson. After a nuclear war, the people of his home planet Davanna have developed an incurable blood disease. Johnson's mission to Earth is to test the blood of humans for its usefulness in saving his kind.