CAUSE OF DEATH - New year's Eve & the final murder scene of Virginia's bloodiest year takes Scarpetta 30 feet below the icy surface of the Elizabeth River. A diver is dead, an investigative reporter, a favourite at the Medical Examiner's office, but was he on the scent of a story or merely diving for sunken trinkets? And why did Scarpetta receive a phone call from someone reporting the death before the police were notified? UNNATURAL EXPOSURE - Scarpetta is on the trail of a serial killer, but the discovery of a 10th corpse shows vital discrepancies & make her wonder if this is a copycat killing. Ghoulish, but not unusual. Then the eleventh body broadcasts a clear and horrifying message: the killer is armed with the most lethal weapon on Earth - smallpox. POINT OF ORIGIN - Scarpetta is called to a burned-out farmhouse where someone has been viciously murdered, but she has another more incendiary horror to face - Carrie Grethen, the killer who nearly destroyed her, has escaped from a secure hospital. Her whereabouts are unknown, but her ultimate destination is not, because she has already told Scarpetta of her deadly plans for revenge.