From David Baldacci--the modern master of the thriller and 1 worldwide bestselling novelist-comes a new hero a lone Army Special Agent taking on the toughest crimes facing the nation.And Zero Day is where it all begins....John Puller is a combat veteran and the best military investigator in the U.S. Armys Criminal Investigation Division. His father was an Army fighting legend, and his brother is serving a life sentence for treason in a federal military prison. Puller has an indomitable spirit and an unstoppable drive to find the truth. Now, Puller is called out on a case in a remote, rural area in West Virginia coal country far from any military outpost. Someone has stumbled onto a brutal crime scene, a family slaughtered. The local homicide detective, a headstrong woman with personal demons of her own, joins forces with Puller in the investigation.