As global assistance pours into Thailand --- including the FBI’s famed Evidence Response Team --- the president of the United States quietly prepares a plan B: Scot Harvath, America’s top spy, trained to operate outside the law and probe the dark corners others can’t…or won’t. But the bomber Harvath is pursuing isn’t a terrorist. He’s something far more dangerous --- one of ours. Meanwhile, in Washington, a former United States Marine is being hunted, and he has no idea why. Desperate for answers, he turns to the one person he still trusts --- his ex-fiancée, a rising star in the White House. But she isn’t sure she can trust him. As Harvath closes in on the bomber, a devastating truth begins to emerge.