The United States has anticipated and averted countless attacks from terrorist groups--thanks in large part to the extralegal counterterrorist unit known as the Taskforce. But in The Insider Threat, a much more insidious evil is about to shatter the false sense of safety surrounding civilized nations. While world powers combat ISIS on the battlefield, a different threat is set in motion by the group--one that can't be defeated by an airstrike. Off...