For two years the "Working Girl Killer" hunted in Manhattan, brutally slaughtering nine city prostitutes. And now the fiend has crossed the river. Former cop-turned-p.i. Karin Schaeffer receives the call meant for her detective husband Mac on a Sunday night: two females found on a Brooklyn street. The first is an eleven-year-old girl, the apparent victim of a hit-and-run. But it's the second body that truly chills the blood?a young corpse bearing the grisly, unmistakable signature of a serial slayer who has eluded the NYPD for years. But there's something frighteningly different about these latest atrocities?a kink that is leading Schaeffer's unofficial investigation down strange and twisting alleys where nothing is as it originally seems. And the haunted p.i., who once lost everything to a psychopath, is suddenly facing the darkness once again . . . when the horror strikes too close to home and those she loves are in danger of vanishing forever.