Seattle Homicide Detective Alice Madison is bound to jailed murderer John Cameron and attorney Nathan Quinn by a debt that cannot be repaid, by a nightmare that changed their lives forever.

When the remains of Quinn's younger brother - murdered when he was a boy - are discovered in a shallow grave, Madison vows to follow the trail of brutal deaths that leads to the truth.

A sadistic killer stalks the investigation as Madison's own demons threaten her future career with the police and darkness closes in. How far is she prepared to go to save a life?