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.