A killer flees the scene of a homicide at a prestigious Manhattan music school and locks himself in a classroom. Within minutes, the police have him surrounded. Then a scream rings out, followed by a gunshot. The police break down the door. The room is empty. Lincoln Rhyme and Amelia Sachs are brought in to help with the high-profile investigation. For the ambitious Sachs, solving the case could earn her a promotion.
The first message sent to Tom Thorne's phone was just a picture - the blurred image of a man's face, but Thorne had seen enough dead bodies to know that the man was no longer alive. But who was he? Who sent the photograph? And why? While the technical experts attempt to trace the sender, Thorne searches the bulletins for a reported death that matches the photograph. Then another picture arrives.