Sean Dillon is back, and the world is at stakeAn eminent Iranian scientist has made a startling breakthrough in nuclear weapons research, but he can't stand the thought of his regime owning the bomb. He would run if he could, but if he does, his family dies. He is desperate, and he doesn't know what to do.It is up to Sean Dillon and the Prime Minister's private army to think of a plan. Most particularly, it is up to their newest member, an intelligence captain and Afghan war hero named Sara Gideon, who thinks there just might be a way to pull it off.But plans have a way of going awry. And as the operation races from Paris and Syria to Iran and the Saudi Arabian desert, the only certainty is that blood will be spilled.