Just before reaching St. Anne’s Gate, they turned right and entered the Swiss Guard barracks. In the reception area a duty officer sat primly behind a half-moon desk. Before him was a bank of closed-circuit television monitors. On the wall behind him hung a crucifix and a row of flags representing each of Switzerland’s twenty-six cantons. As Gabriel and Müller walked past, the duty officer made a notation in his logbook. “The Swiss Quarter is tightly controlled,” Müller said. “There are three different entry points, but this is the main one.”

They left the reception area and turned right. A long dark corridor stretched before them, lined with tiny cell-like quarters for the halberdiers. At the end of the corridor was an archway, and beyond the archway an interior stone courtyard, where a drill sergeant was putting six novices through their paces with wooden rifles. They entered the building on the other side of the courtyard and descended a flight of stone steps to the indoor firing range. It was silent and unoccupied.

“This is where we do our weapons training. The walls are supposed to be soundproof, but sometimes the neighbors complain about the noise.”

“The neighbors?”

“The Holy Father doesn’t seem to mind, but the cardinal secretary of state is not enamored with the sound of gunfire. We don’t shoot on Sundays or Catholic holy days.” Müller went over to a metal cabinet and opened the padlock. “Our standard-issue sidearm is a 9mm SIG-Sauer with a fifteen-shot magazine.” He glanced over his shoulder at Gabriel as he opened the doors of the cabinet. “It’s a Swiss-made weapon. Very accurate…and very powerful. Would you like to try it out?”

Gabriel nodded. Müller removed a gun, an empty magazine, and a full box of ammunition and carried them over to the range. He started to load the gun, but Gabriel stopped him. “I’ll do that. Why don’t you see to the target.” The Swiss Guard clipped a target to the line and ran it out halfway over the range. “Farther,” Gabriel said. “All the way to the end, please.” Müller did as he was told. By the time the target had reached the distant wall of the range, Gabriel had loaded fifteen rounds into the magazine and inserted it into the butt of the pistol. “You’re quick,” Müller remarked. “You must have good hands.”

“I’ve had a lot of practice.”

He offered Gabriel protection for his ears and eyes.

“No thanks.”

“Rules of the range, sir.”

Gabriel turned without warning and opened fire. He kept firing until the gun was empty. Müller reeled in the target while Gabriel ejected the empty magazine and picked up his brass.

“Jesus Christ.”

All fifteen shots were grouped in the center of the target’s face.

“Do you want to shoot again?” Müller asked.

“I’m fine.”

“How about a shoulder holster?”