The GRay Man by Mark Greaney

THE FIRST GRAY MAN NOVEL FROM #1 NEW YORK TIMES BESTSELLING AUTHOR MARK GREANEY-Now a Netflix Film Starring Ryan Gosling and Chris Evans
"Hard, fast, and unflinching-exactly what a thriller should be."-Lee Child
To those who lurk in the shadows, he's known as the Gray Man. He is 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. Always.
But there are forces more lethal than Gentry in the world. Forces like money. And power. And there are men who hold these as the only currency worth fighting for. And in their eyes, Gentry has just outlived his usefulness.

But Court Gentry is going to prove that, for him, there's no gray area between killing for a living and killing to stay alive....