Vengeance is a woman. She never forgets. Never forgives. And never fails to get even.

Ex-assassin Tess Williams hunts the monsters that prey on the innocent: murderers, rapists, gangbangers, pimps… So when a crazed sniper starts blasting people from Manhattan's rooftops, Tess dives into the city's shadows to nail him, leaving a trail of carnage in her wake.

Tess's hunt for leads plunges her into the sleazy underworld of white supremacy and illegal arms deals. Yet no matter who she begs, bribes, or batters, all she uncovers is a mystery as tangled as it is deadly.

Tess battles on, determined to stop this psycho because if she fails, the blood of his innocent victims will be on her hands. But the clock is ticking and the killer is already lining up his next target...