To Detective Billy Harney, the newest member of Chicago PD's elite strike force getting shot in the head, stalked by a state's attorney, and accused of murder by his fellow cops is all part of breaking a case.

So, when a drive-by shooting on the Chicago's west side turns political, he leads the way to a quick solve. But as a population hungry for justice threatens to riot, he realises that the three known victims are hardly the only ones.

As the easy answers prove to be the wrong ones, Harney's quest to expose the evil that's rotting the city from the inside out takes him to the one place he vowed never to return: his own troubled past.