Overview
Single White Female is a 1992 American psychological erotic thriller film based on John Lutz's 1990 novel SWF Seeks Same. It stars Bridget Fonda and Jennifer Jason Leigh and was directed by Barbet Schroeder. Recently estranged Allison Jones (Fonda) begins to rent an apartment room to Hedra Carlson (Leigh). After she reconciles with her ex-boyfriend, she finds strange patterns of behavior in her tenant.
Plot
New York City software designer Allison "Allie" Jones is engaged to Sam Rawson. Sam's ex-wife calls, and when it is revealed that he slept with her recently, Allie throws him out, breaking off their engagement, and her neighbor, aspiring actor Graham Knox, comforts her. The next morning, Allie attends a business lunch with Mitchell Myerson, a fashion house owner looking to buy Allie's revolutionary new program. He manipulates her into significantly reducing the price; as he is her first and only client, she accepts.
Allie advertises for a new roommate to share her apartment in the Ansonia. She settles on Hedra Carlson, whom she nicknames "Hedy", and they become friends. Hedy explains that her twin was stillborn, leaving her constantly lonely. Hedy becomes overly protective of Allie, erasing Sam's voice-mail asking Allie to reconcile with him. She buys a puppy named Buddy to bond with Allie, but becomes jealous when Sam wins Allie back and they seek a new apartment for themselves. Perceiving Allie as having rejected her, Hedy is upset and becomes further frustrated when Buddy does not come to her even when she coaxes him. Allie and Sam later find Buddy's corpse on the ground below her apartment's window. Returning to the apartment, Allie sees that the window was open with a gap wide enough for Buddy to get through. Hedy claims that Buddy's death was an accident because she had thought the bars outside the window had been fixed.
Mitchell tries to coerce Allie into performing fellatio on him upon completing their deal, threatening to warn off future clients and not pay her, but she fights back and escapes. Seeing how distraught Allie is by the encounter, Hedy calls Mitchell and threatens him as payback. To comfort Allie, Hedy takes her to get a haircut, but after Hedy appears dressed exactly like her, including her haircut, Allie is unnerved. That night, Allie follows Hedy to an underground nightclub and witnesses Hedy masquerading as Allie.
From Wikipedia (CC BY-SA 4.0).