Ex-CIA master assassin Court Gentry gets hit with a blast from the past in the fourth Gray Man novel from #1 New York Times bestselling author Mark Greaney. Court Gentry has always prided himself on his ability to disappear at will, to fly below the radar and exist in the shadows--to survive as the near-mythical Gray Man. But when he takes revenge upon a former employer who betrayed him, he exposes himself to something he's never had to face before:...