No. 1 New York Times bestselling author Patricia Cornwell delivers the twenty-fourth engrossing thriller in her high-stakes series starring medical examiner Dr. Kay Scarpetta. Someone is following you. One summer evening in New England, two young girls stumble upon a body. Forensic pathologist Dr. Kay Scarpetta arrives at the scene to find a young woman has been attacked with almost superhuman force. Someone is taunting you. Meanwhile, people close to Scarpetta start receiving suspicious calls. Could they be linked to Scarpetta's anonymous cyber stalker, Tailend Charlie? Someone wants to destroy you. A second death shocks Scarpetta to her core. Because analysis of the body shows a material that doesn't exist on earth. And it's clear that someone, or something, is coming for her, and is hell-bent on creating chaos.