When Atlanta police detective Michael Ormewood is called out to a murder scene at the notorious Grady Homes, he finds himself faced with one of the most brutal killings of his career: Aleesha Monroe is found in the stairwell in a pool of her own blood, her body horribly mutilated.

As a one-off killing, it's shocking, but when it becomes clear that it's just the latest in a series of similar attacks, the Georgia Bureau of Investigation is called in, and Michael is forced into working with Special Agent Will Trent of the Criminal Apprehension Team - a man he instinctively dislikes.

Twenty-four hours later, the violence Michael sees around him every day explodes in his own backyard. And it seems the mystery behind Monroe's death is inextricably entangled with a past that refuses to stay buried.