P.I. Angie DeRose strives to find and rescue endangered runaways—work that stands in stark contrast to her own safe, idyllic childhood. But in the wake of her mother's sudden death, Angie makes a life-altering discovery. Hidden among the mementos in her parents' attic is a photograph of a little girl, with a code and a hand-written message on the back: May God forgive me. Angie has no idea what it means and her father claims to know nothing. The lies she unearths will bring her past and present together with terrifying force. And everything she cherishes will be threatened by the repercussions of one long-ago choice—and an enemy who will kill to keep a secret hidden forever.