A betrayed wife and dedicated mother suddenly forced to raise her six-month-old daughter alone, Melanie Vargas is also an ambitious, hard-working professional who has had to bite and claw for recognition in the federal prosecutor's office. Then, while strolling with her baby girl on a steamy New York night, Melanie stumbles onto the kind of high-profile case that could make a career: the burning townhouse of a wealthy former prosecutor, its owner's tortured, murdered corpse smoldering within. Melanie Vargas wants this chance — she needs it — and she'll do whatever it takes to get it.

But a headline-grabbing opportunity of a lifetime could cost Melanie more than she ever imagined, as it pulls her closer to a dangerous affair with a secretive, enigmatic FBI agent — and closer still to a sadistic human monster moving expertly through the city's darkest shadows.