A 14-year-old 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, codename Hangman. Blake is a genius, known for solving impossible cases. He's also a psychopath with a dark secret, and the FBI's last resort. But this time Blake might have met his match. The kidnapper is more cunning and ruthless than anyone he's faced before. And Blake has been assigned a new partner, a woman linked to the past he's so desperate to forget. Timothy Blake has a secret, one so dark he will do anything to keep it hidden. And he also has a price. Every time he saves a life, he takes one.