He was one the best Marine snipers in Vietnam. Today, 20 years later, all Bob Lee Swagger wants is to be left alone. But a shadowy military organization seduces him into one last mission for his country - unaware until too late that the game is rigged. The assassination plot is executed to perfection until Bob Lee Swagger, alleged lone gunman, comes out of the operation alive, the target of a nationwide manhunt, with his only allies a woman he just met and a discredited FBI agent.

Earl Swagger is tough as hell. But even tough guys have their secrets. Plagued by the memory of his abusive father, apprehensive about his own impending parenthood, Earl is a decorated ex-Marine of absolute integrity — and overwhelming melancholy. Now he’s about to face his biggest, bloodiest challenge yet. It is the summer of 1946, organized crime’s garish golden age, when American justice seems to have gone to seed for good.

Lamar Pye has escaped from Oklahoma State Penitentiary, accompanied by his idiot cousin and a vicious but cowardly artist. To have stayed in prison was certain death, but his chances on the outside are not much greater: his excesses know no bounds - one killing follows another. But one murder brings his nemesis upon him: Bud Pewtie of the Highway Patrol loses his partner in a blood-soaked shoot-out with Lamar, and from that moment on, nothing will stop him from getting even.

It is the spring of 1945. And Repp, the master sniper, is about to carry out his final mission – even as Germany’s enemies overrun it, even while a tired, disorganized team of American and British agents tries everything in its power to stop him. Because for Repp, this is the job at which he cannot fail. For this time, he possesses the ultimate killing tool. And with it, he will commit the ultimate crime.

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.