Donati looked at Gabriel. “You have,” he said. “You’ve seen the terrorists up close. And you’ve seen the look in a man’s eyes as he was about to press the button on his detonator.”

They stopped a few yards from St. Anne’s Gate. On the left was the round, butter-colored Church of St. Anne, parish church of Vatican City; to their right the entrance to the Swiss Guards barracks. One of the guards stood watch just inside the gate, dressed in his simple blue night uniform.

“What do you want me to do, Luigi?”

“I leave that in your capable hands. Make a general nuisance of yourself. If you see a problem, address it.”

“On whose authority?”

“Mine,” Donati said resolutely. He reached into the pocket of his cassock and produced a laminated card, which he handed to Gabriel. It was a Vatican ID badge with Security Office markings. “It will get you anywhere in the Vatican—except for the Secret Archives, of course. I’m afraid we can’t have you rummaging around in there.”

“I already have,” said Gabriel, then he dropped the badge into his coat pocket and slipped into the street. Donati waited at St. Anne’s Gate until Gabriel had disappeared into the darkness, then he turned and headed back to the palace. And though he would not realize it until later, he was murmuring the words of the Hail Mary.

GABRIEL CROSSED the Tiber over the Ponte Umberto. On the opposite embankment he turned left and made his way to the Piazza di Spagna. The square was deserted, and the Spanish Steps shone in the lamplight like polished wood. On the twenty-eighth step sat a girl. Her hair was similar to Chiara’s, and for a moment Gabriel thought it might actually be her. But as he climbed higher he saw it was only Nurit, a surly courier from Rome Station. She gave him a key to the safe flat and, in Hebrew, told him that behind the tins of soup in the pantry he would find a loaded Beretta and a spare clip of ammunition.

He hiked up the rest of the steps to the Church of the Trinità dei Monti. The apartment house was not fifty yards from the church, on the Via Gregoriana. It had two bedrooms and a small terrace. Gabriel retrieved the Beretta from the pantry, then went into the larger of the two bedrooms. The telephone, like all safe-flat telephones, had no ringer, only a red light to indicate incoming calls. Gabriel, lying in bed in the clothes he’d donned to meet the prime minister, picked up the receiver and dialed a number in Venice. A woman’s voice answered. “What is it?” she asked in Italian. Then, receiving no answer, she muttered a curse and slammed down the phone—hard enough so that Gabriel jerked the receiver away from his ear before replacing it gently in the cradle.