In a gripping game of cat and mouse, FBI Agent Sidney Stone hunts a vigilante killer targeting child predators, while battling her growing feelings for her unavailable partner, Alex Kane. As the Avenger's brutal spree intensifies and long-buried secrets surface, Sidney must confront her conflicted heart and outsmart a killer who's always one step ahead.

In the shadows of New York City, a vigilante known as the Avenger is hunting child predators, leaving a trail of brutally killed bodies and cryptic puzzle pieces in his wake. FBI Agent and profiler Sidney Stone is called in to crack the case, but as she delves deeper, she realizes the killer's motives hit closer to home than she ever expected.

Partnered with the charismatic Alex Kane, Sidney must navigate a labyrinth of lies, corruption, and buried secrets - all while grappling with her growing feelings for her unavailable partner. As the Avenger's game grows more deadly, Sidney finds herself torn between her heart and her duty, questioning everything she thought she knew about justice and loyalty. With time running out and lives hanging in the balance, she must push aside her personal turmoil to outwit a killer who always seems to be one step ahead.