The guard’s amiable expression vanished, and he fumbled for the revolver in its belt holster. In Turkey, shouting PKK was the equivalent of throwing gasoline onto an open fire. The guard had finally got his gun out.

The guard saw the knife in Buck’s hands. Holding the revolver with two hands, he shouted in Turkish. Buck turned and saw the muzzle pointed at his chest. The knife clattered to the floor, and he raised his hands in the air.

One of Buck’s men was aiming a pistol at the guard. Austin threw a battering ram shoulder block into the man’s midsection, and the gun went flying. They crashed to the floor, and Austin drew his arm back and nailed the man with a short punch to the jaw.

The throne room had emptied out. The tour guide had ducked into a doorway and was calling for reinforcements on his radio.

Buck slipped his hand under his jacket and came out with a gun. It was a fatal mistake. The middle-aged guard was a Turkish army veteran. Although he was thick around the middle, he remembered the discipline that had been drilled into him. Austin got to his feet, yelled “PKK” again, and pointed at Buck.

The guard turned, calmly aimed at Buck’s torso, and squeezed the trigger. The bullet caught Buck square in the chest and sent him crashing onto the sultan’s divan.

Austin scrambled to his feet, grabbed Carina, who had been frozen in place, and guided her toward the exit door. They flew along a corridor, made a blind turn, and retraced their steps to a small room that had a door in the corner. The door led out onto a terrace that was drenched with sunlight.

Standing on the terrace were the two men who had chased them through the abandoned village. Austin stepped in front of Carina to protect her. As the men started toward Austin and Carina, the harem door burst open and Buck’s men stepped out into the open with guns in hand. They blinked in the bright sunlight and didn’t see the Turks reach under their jackets for guns, which had silencers attached. The guns coughed simultaneously. Buck’s men crumpled to the deck.

While one Turk kept his gun trained on the door, the other took Austin’s arm.

“Come,” he said. “It’s okay. We’re friends.” He gave Austin a friendly pat on the back and winked at Carina.

The other man took up the rear. He was talking on a cell phone and frequently glanced over his shoulder to see if they were being followed.

The Turks hid their guns when they entered the public area and led the way through a maze of buildings and courtyards to the palace gate. A silver Mercedes waited at the curb with its engine running. The lead Turk opened the passenger door.