Relentless

Disappearing intelligence analysts lead the Gray Man deep into a conspiracy in the latest explosive novel from number one New York Times bestseller Mark Greaney. The first agent's disappearance was a puzzle. The second was a mystery. The third was a conspiracy. Intelligence operatives around the world are disappearing. When a missing American agent reappears in Venezuela, Court Gentry, the Gray Man, is dispatched to bring him in, but a team of assassins has other ideas.
Court escapes with his life and a vital piece of intelligence. Meanwhile, CIA agent Zoya Zakharova is in Berlin. Her mission: to infiltrate a private intelligence firm with some alarming connections. The closer she gets to answers, the less likely she is to get out alive. Court and Zoya are just two pieces on this international chessboard, and they're about to discover one undeniable truth: sometimes capturing a king requires sacrificing some pawns.*** And preorder the new novel in the Gray Man series SIERRA SIX now ***