The Villa dei Fiori, a thousand-acre estate in the rolling hills between the Tiber and Nera rivers, had been a possession of the Gasparri family since the days when Umbria was still ruled by the popes. There was a large and lucrative cattle operation and an equestrian center that bred some of the finest jumpers in all of Italy. There were pigs no one ate and a flock of goats kept solely for entertainment value. There were khaki-colored fields of hay, hillsides ablaze with sunflowers, olive groves that produced some of Umbria ’s best oil, and a small vineyard that contributed several hundred pounds of grapes each year to the local cooperative. On the highest part of the land lay a swath of untamed woods where it was not safe to walk because of the wild boar. Scattered round the estate were shrines to the Madonna, and, at an intersection of three dusty gravel roads, stood an imposing wood-carved crucifix. Everywhere, there were dogs: a quartet of hounds that roamed the pastures, devouring fox and rabbit, and a pair of neurotic terriers that patrolled the perimeter of the stables with the fervor of holy warriors.

The villa itself stood at the southern edge of the property and was reached by a long gravel drive lined with towering umbrella pine. In the eleventh century, it had been a monastery. There was still a small chapel, and, in the walled interior courtyard, the remains of an oven where the brothers had baked their daily bread. The doors to the courtyard were fashioned of heavy wood and iron and looked as though they had been built to withstand pagan assault. At the base of the house was a large swimming pool, and adjacent to the pool was a trellised garden where rosemary and lavender grew along walls of Etruscan stone.

Count Gasparri, a faded Italian nobleman with close ties to the Vatican, did not rent the villa; nor did he make a habit of lending it to friends and relatives, which was why the staff were surprised by the news that they would be playing host to a long-term guest. “His name is Alessio Vianelli,” the count informed Margherita, the housekeeper, by telephone from his office in Rome. “He’s working on a special project for the Holy Father. You’re not to disturb him. You’re not to talk to him. But, most important, you are not to tell a soul he’s there. As far as you’re concerned, this man is a nonperson. He does not exist.”