Not of This Earth is a 67-minute, 1957 American black-and-white science fiction film written by Charles B. Griffith and Mark Hanna. It was produced and directed by Roger Corman for Los Altos Productions and 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 suffer from an incurable blood disease. Johnson's mission is to test the blood of humans on its usefulness for his dying kind.