Covert counterterrorism agent Scot Harvath awakens to discover that his world has changed violently -- and forever. A sadistic assassin with a personal vendetta is wreaking havoc of biblical proportions. Unleashing nightmarish horrors on those closest to Harvath, the attacker thrusts everything Harvath holds dear -- including his life -- into absolute peril. Ordered by the president to stay out of the investigation, Harvath is forced to mount his own operation to uncover the conspiracy and to exact revenge. When he discovers a connection between the attacks and a group of prisoners secretly released from Guantanamo, Harvath must ask himself previously unthinkable questions about the organizations and the nation he has spent his life serving.