How long does it take Sasha to get fierce in this almost-tongue-in-cheek Fatal Attraction retread? Too long — and even after Beyoncé Knowles (who executive-produced, as did her daddy) delivers the promising line "I'll show you crazy!" to Lisa (Ali Larter), the predatory temp who's been messing with her asset-manager husband, Derek (Idris Elba), what follows isn't half as dramatic as what probably went down after she kicked LaTavia and LaToya out of Destiny's Child. Obsessed is not without its guilty pleasures: Elba taking his shirt off, Christine Lahti's no-nonsense detective (and her pantsuits). But the film's anxiety surrounding interracial sex is so high that nothing, except for flirting, actually happens between Derek and Lisa; the white she-devil makes it all up. Even more suspect than Lisa's skin color is the fact that no one's yet put a ring on it. "A lot of these single gals see the workplace as their hunting ground," one of Derek's colleagues counsels. Where are Sasha and her Fosse dance moves when you need them most? All my single ladies, now put your hands up: You're under arrest.
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