"Thou shalt not negotiate with terrorists..."

The president of the United States has broken the nation's #1 commandment and by doing so has just put himself in the crosshairs of America's #1 counter-terrorism operative, Scot Harvath.

Prologue (two years ago): Guantanamo Bay, Cuba. In the dead-of-night, five of the most dangerous detainees in the war on terror are pulled from their isolation cells, held at gunpoint, and told to strip off their orange jumpsuits. The prisoners are issued civilian clothes and driven to the base airfield where they are loaded aboard a black Boeing 727, which whisks them away to freedom.

Present Day: Covert counter-terrorism operative Scot Harvath awakes to find that his girlfriend, Tracy Hastings has been killed and that the assassin has left behind a very strange calling card. The doorframe above Harvath's entryway has been painted with blood, but not just any blood. Analysis indicates that the killer painted the doorframe with lamb's blood tainted with a unique radioactive isotope. The isotope is part of a top-secret program the United States developed to covertly track the movements of the nation's worst enemies.

Angered with the lack of cooperation he is receiving, and against the direct orders of the president, Harvath mounts his own operation to hunt down who killed Tracy Hastings, and to exact revenge. It is a quest that will place Harvath on the opposite side of the United States itself and thrust everything he holds dear, including his own life, into absolute peril.