Michael Douglas stars as Nick Curran, a tough but vulnerable detective. Sharon Stone co-stars as Catherine 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 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.