Audiobook of the chilling new thriller from the number one bestseller. Three and a half years ago former Grant County medical examiner Sara Linton moved to Atlanta hoping to leave her tragic past behind her. But when a severely wounded woman is brought in to hospital, she finds herself drawn back into a world of terror. When Special Agent Will Trent returns to the scene of the accident, he stumbles on a torture chamber buried deep beneath the earth. This hidden house of horror reveals a ghastly truth - Sara's patient is just the first victim of a sick, sadistic killer.