Amos Decker witnesses a murder just outside FBI headquarters. A man shoots a woman execution style on a crowded sidewalk, then turns the gun on himself. Even with Decker's extraordinary powers of observation and deduction, the killing is baffling. Decker and his team can find absolutely no connection between the shooter -- a family man with a successful consulting business -- and his victim, a schoolteacher. Nor is there a hint of any possible motive...

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...

What happens if both the president and vice-president-elect die before taking the oath of office? The answer is far from certain -- in fact, what follows would be nothing short of total political chaos. Shot down over Siberia, ex-Justice Department agent Cotton Malone is forced into a fight for survival against Aleksandr Zorin, a man whose loyalty to the former Soviet Union has festered for decades into an intense hatred of the United States. Before...