Hangman

A boy vanishes on his way home from school. His frantic mother receives a ransom call: pay or else. It's only hours before the deadline, and the police have no leads. Enter Timothy Blake, an FBI consultant with a knack for solving impossible cases but whose expertise comes at a price. Every time he saves a life, he takes one, trying to satisfy an urge he fears he can only control for so long. And this time Blake may have met his match. The kidnapper is more cunning and ruthless than any he's faced before. And he's been assigned a new partner within the Bureau: a woman linked to the past he's so desperate to forget. Because he has a secret, one so dark he will do anything to keep it hidden.