A gas explosion vaporizes a man's torso, leaving only half the body from the waist down. Was it an accident - or murder? Their investigation reveals that the man was an IRS agent living a complex life as a self-styled spy. Could this IRS agent's quest to become a hero have gotten him killed? Meanwhile Detective Carl Ames, who oversaw Crews' murder investigation 12 years ago, is found dead in the parking lot of the police station. Once again, Crews finds himself at the center of a murder investigation.