Evan Smoak is a man with skills, resources, and a personal mission to help those with nowhere else to turn. He’s also a man with a dangerous past. Chosen as a child, he was raised and trained as an Orphan, an off-the-books black box program designed to create the perfect deniable intelligence asset: An assassin. Evan was Orphan X - until he broke with the program and used everything he learned to disappear. But now someone is on his tail.

A desperate Kremlin takes advantage of a military crisis in Asia to simultaneously strike into Western Europe and invade east Africa in a bid to occupy three rare Earth mineral mines that will give Russia unprecedented control over the world's hi-tech sector for generations to come. Pitted against the Russians are a Marine lieutenant colonel pulled out of a cushy Pentagon job, a French Special Forces captain and his intelligence operative father, a young Polish partisan fighter, an A-10 Warthog pilot, and the commander of an American tank platoon....

To all appearances, Dan Chase is a harmless retiree in Vermont with two big mutts and a grown daughter he keeps in touch with by phone. But most 60-year-old widowers don't have multiple driver's licenses, savings stockpiled in banks across the country, and a bugout kit with two Beretta Nanos stashed in the spare bedroom closet. Most have not spent decades on the run.

CIA Case Officer Sam Joseph is dispatched to Paris to recruit Syrian Palace official Mariam Haddad. The two fall into a forbidden relationship, which supercharges Haddad's recruitment and creates unspeakable danger when they enter Damascus to find the man responsible for the disappearance of an American spy. But the cat-and-mouse chase for the killer soon leads to a trail of high-profile assassinations and the discovery of a dark secret at the heart of the Syrian regime.

Court Gentry is known as The Gray Man—a legend in the covert realm, moving silently from job to job, accomplishing the impossible, and then fading away. And he always hits his target. But there are forces more lethal than Gentry in the world. And in their eyes, Gentry has just outlived his usefulness. Now, he is going to prove that for him, there's no gray area between killing for a living-and killing to stay alive.