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Olivia D'Abo's sister Maryam and Mariel Hemingway's sister Margaux star in Double Obsession. Heather Dwyer (Margaux) falls in love with her roommate Claire Durka (Maryam), but "happily ever after" is not in the cards. Claire, you see, loves someone else, and Heather, you see, can't live with that. The sadistic one-upsmanship and domination games played throughout the film make Single White Female look like The Five Little Peppers and How They Grew. The suspense lies not in who will survive, but how long it will be before the neighbors complain. Frederic Forrest carries a what-am-I-doing-here? expression all during his brief scenes. As psycho-roommate films go, Double Obsession certainly delivers what its target audience craves.