Not of This Earth is a 1957 American blackandwhite science fiction film produced and directed by Roger Corman for his Los Altos Productions, starring Paul Birch, Beverly Garland, Morgan Jones, and William Roerick. The film was written by Charles B. Griffith and Mark Hanna and was distributed by Allied Artists Pictures Corporation. Prints ran 67minutes others were expanded by the distributor to 71minutes.
After Johnsons burial, Sherbourne and Nadine stand by his grave, which bears the inscription Here lies a man who was not of this Earth. While Sherbourne expresses mild compassion for Johnson, whose driving force was the rescue of his planet and its dying populace, Nadine refuses to offer any kind of pity. They leave, but soon a mysterious man appears at the grave site. Note Like Johnson, he wears the same sunglasses and carries the same distinctive case containing transfusion equipment.Griffith says that after he and Corman had collaborated on the film Gunslinger, he suggested they make a science fiction film and Corman agreed Not of This Earth was the result. He also said he originally wrote the part of the vacuum cleaner salesman for himself. ........
Source: Wikipedia