When a high-level intelligence source reveals that Iranian agents are planning to bomb the United Nations, US Intelligence begins desperate counter-measures. Only maverick CIA agent, Ryan Kealey, sees it as a smokescreen for another, far more terrifying plot. But no-one is prepared to follow his hunch. Worse still, it would seem that even the halls of the CIA are no longer safe from possible espionage and treason. Meanwhile a weapon of catastrophic power is smuggled into the US, in the hands of an international criminal mastermind. A man who will stop at nothing to inflict total devastation on his chosen target, and a man who is a vengeful shadow from Kealey's past . . . Kealey must battle against all odds while the clock is ticking down towards an act of unholy terror...