THE four dead men were lined up on the living room floor of the safe house. Mitch Rapp started with the one on the left. The bearded face, the dark, lifeless eyes, and the dime-sized bullet hole that marked the center of the man’s forehead were all expected. One bullet, nice and neat—the way Rapp would have done it. The next two bodyguards looked the same, including red pucker marks in the center of their brows. The fourth Afghani was a different story. He’d been shot through the back of the head. A quarter of his face was now a jagged crater of flesh, blood, and bone. The exit...