Susan Morrow receives a book manuscript from her ex-husband – a man she left 20 years earlier – asking for her opinion of his writing. As she reads, she is drawn into the fictional life of Tony Hastings, a mathematics professor whose family vacation turns violent.
Receiving a manuscript and request for feedback from her vengeful ex-husband of fifteen years, Susan Morrow is drawn into the life of the story's fictional character and confronts a devastating parallel darkness from her own past.