Michael Douglas stars as Nick Curran, a tough but vulnerable detective. Sharon Stone costars as Catherin Tramell, a cold, calculating, and beautiful novelist with an insatiable sexual appetite. Catherine becomes a prime suspect when her boyfriend is brutally murdered -- a crime she had described in her latest novel. Obsessed with cracking the case, Nick descends into San Francisco's forbidden underground where suspicions mount, bodies fall and he finds within himself an instinct more basic than survival.