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Obsessed was based on the William Dinner-William Moray play The Late Edwina Black, which also served as the film's original British title. The play had a cast of four: a Scotland Yard inspector, a schoolteacher, the schoolteacher's illicit lover, and his late wife's housekeeper. The film expands the cast list somewhat, though most of the dramatic weight is carried on the shoulders of the four protagonists. When Gregory's (David Farrar) wife dies of arsenic poisoning, suspicion immediately falls upon Gregory, his mistress Elizabeth (Geraldine Fitzgerald) and housekeeper Ellen (Jean Cadell). It's up to the Inspector (Roland Culver) to determine the guilty party -- a difficult task, inasmuch as the three suspects work overtime casting doubts on one another. Released in the U.S. by United Artists, Obsessed was copyrighted under the name of Stuart Scheftel, then the husband of star Geraldine Fitzgerald.