Detective Christie Opara arrests a man on the subway for indecent exposure. Within hours, Murray Rogoff, a burly giant, is out on bail. Soon after, the body of a young dancer is found stashed behind the stairway of a Bronx apartment building. The girl was brutally raped and strangled, and a clue links her with two previous murders. The killer takes a signature trophy: a hacked-off lock of the victim's hair. When Christie starts to get strange, late-night phone calls her instincts tell her that Rogoff's the serial killer they're hunting. With the reluctant approval of her boss, Assistant District Attorney Casey Reardon, Christie prepares to become the bait of a deadly psychopath.