So Evil, My Sister (also titled Psycho Sisters) is a 1974 American horror film, starring Susan Strasberg and Faith Domergue. It was directed by Reginald Le Borg and produced by Zenith Productions.
According to director Reginald LeBorg, the film was financed on $300,000. He suggested to the producers that it could be made in as little as âÂÂten or eleven days.â The small budget would preclude any set construction or elaborate props, requiring that they shoot in âÂÂan office, or go on the road, or go to the beach.âÂÂ
LeBorgâÂÂs movie provided little in the way of action, and the producers inserted a number of automobile chases. LeBorg declined to provide the editing and a cutter, Herbert L. Strock (director of Gog (1954) and Battle Taxi (1955)), was engaged to act as editorial supervisor.
So Evil, My Sister was LeBorgâÂÂs last feature film of his career.
So Evil, My Sister never was given a general theatrical release by Zenith International and Joseph Brenner Associates. The production has since appeared on Home Video.