The clock is ticking - and President Jack Ryan is running out of time... A U.S. Navy Commander is attacked in a crowded restaurant while on leave. How did the assassin know his exact location? In Tehran airport, a Canadian businessman is taken away to be interrogated. A CIA operative for over a decade - why has his cover now been blown? A massive information breach has compromised America's intelligence agencies and around the globe, the noose is tightening. And the only man who can stop it, is the one closest to the danger: President Jack Ryan.