Two years have passed since the GSF nearly collapsed. The mole responsible may have escaped, but he was never forgotten, especially by Agent Sarah Hill. Now, the mole has resurfaced as a mercenary for the world's most dangerous terrorist groups. And when Hill discovers what his next job is, it's a race against time to stop him before a nuclear weapon falls into the wrong hands. But if she has to choose between stopping the bomb, or stopping him, will she be able to keep her finger off the trigger?