As a result of childhood trauma, an uptight psychotherapist splits personality at night to become a sexually rapacious club-goer. But is she also responsible for a spate of murders? You can see why Hamilton signed on for this one: a dual role is always a good showcase. But though she tries hard, as does Belushi as the ex-cop who falls for her (but which one of her?), neither can rise above the collection of clichés that passes for a script.