Dr. Ethan Stark has made his living studying murderers. He wants to know what makes them tick. Is it nature or nurture that makes a monster? The answer to this question is of particular interest to Ethan. He only became Ethan Stark when his father's murder conviction forced him and his mother to start new lives. Now, at the medical facility for criminally insane where Peter Crane, his father, is incarcerated, he's going to come face to face with him for the first time in twenty-eight years. It's a trip that will bring him back into the life of Tony Mendez, a retired cop who can't give up on cold cases, and Anne Leone, the victim who survived Ethan's father, who - thanks to the young attorney fighting to free Peter Crane - is reliving her ordeal all over again . And in the shadows is someone else from Ethan's past, watching the Crane appeal case with a little too much interest.