British Intelligence agent Nick Stone has just been given a chilling ultimatum; find a missing agent who appears to have defected or lose the guardianship of his beloved nine-year-old goddaughter. In Stone's mind, there is no choice. The 'runner' is Sarah Greenwood, U.K. liaison with the Counterterrorisin Center, a cell set up by the CIA to warn against potential terrorist attacks. Steel-willed, beautiful, cunning, Sarah is also Nick's former lover, the only woman who has ever been allowed under his rough, impenetrable guard. Relying on his keen instincts and cool logic, Nick tracks Sarah to the mountainous backwoods of North Carolina. There, in a remote cabin, she conspires with two Middle Eastern men. Then Nick's mission takes a decidedly dark turn when he receives a T104 - an order to kill Sarah without leaving a trace. But nothing is what it seems, as Nick and Sarah themselves become hunted, racing deeper into a dark, deadly conspiracy that will change the course of world events - and the lives of millions.