"My God, but this thing has gone too far," murmured Father I Donati. Then he bent over the body of the dead priest and administered last rites.

Gabriel entered the study and found a nun bowed over the body : of Cardinal Brindisi. Father Donati followed a moment later, his, face ashen. He walked wearily across the room, then collapsed to the floor next to the nun, oblivious to the fact that he was kneeling; in blood.

FROM HER position at the end of the colonnade, Katrine Boussard had seen everything: the arrival of the two men on motorcycle, the confrontation between the carabiniere and the priest who claimed to be the Pope's secretary, the mad race across the square. Clearly they knew something was taking place inside the palace. She started the engine, gazed across the square toward the Bronze Doors, and waited.

Lange's hopes of slipping quietly out of the Vatican were all but gone. The entrance hall of the palace was filled with Swiss Guards and Vatican police, and it appeared as though the Bronze Doors had been sealed. Obviously someone had ignored his warnings and sounded an alarm. Lange would have to use other means of escaping. In a hasty attempt to alter his appearance, he removed his eyeglasses and shoved them into his pocket. Then he headed calmly toward the Bronze Doors.

A Swiss Guard put a hand on his chest. "No one in or out for the time being."

"I'm afraid I can't be detained," Lange said calmly. "I need to leave at once for a pressing appointment."

"Orders are orders, Monsignor. There's been a shooting. No one can leave."

"A shooting in the Vatican? Dear God."

For the benefit of the Swiss Guard, Lange made the sign of the cross before reaching inside the jacket of his clerical suit and drawing the Stechkin. The Swiss Guard fumbled in his Renaissance costume trying desperately to remove his own weapon, but before he could bring it into play Lange shot him twice in the chest.

A scream filled the hall as Lange lunged toward the Bronze Doors. A Swiss Guard stepped into his path, a Beretta in his outstretched hands. He hesitated; Lange was surrounded by shouting clerics and Vatican bureaucrats. The man who spent eight hours a

 day holding a halberd didn't have the nerve to fire into a crowd and risk innocent casualties. Lange had no such worries. The Stechkin swung up, and he blew the Swiss Guard from his feet.

Lange sprinted through the Bronze Doors. A carabiniere walked toward him, gun leveled on his hip, shouting at him in Italian to lay down his weapon. Lange turned and fired. The carabiniere fell to the paving stones of St. Peter's.

What he saw next was something out of his nightmares: a half dozen carabinieri, running across the square directly toward him, I automatic weapons drawn. There would be no shooting his way out of this. Come on, Katrine. Where are you?

Standing a few feet away was a woman, an American girl by the look of her, about twenty-five years old, too terrified to move. Lange closed the distance between himself and the girl in three powerful strides, then seized her hair and pulled her to his body. The carabinieri skidded to a stop. Lange placed his Stechkin against the side of the girl's head and started dragging her across the square.

Gabriel heard screaming outside the window of Cardinal Brindisi's office. He parted the heavy curtains and looked down. The square was in turmoil: carabinieri running with weapons drawn, tourists scurrying for cover in the colonnade. And walking across the center of the square was a man in a clerical suit, holding a gun to the head of a woman.

Katrine Boussard saw him too, though from a different vantage point: her position at the end of Bernini's Colonnade. As

the square erupted into chaos, the carabiniere who had opened the barricade to the two men on motorcycle left his position and ran toward the palace. Katrine kicked the bike into gear and rolled forward, then she turned through the gap in the fence and started across the square.

Lange saw her coming. When she was a few feet away he pushed the American girl to the ground, climbed on the bike in front of Katrine took hold of the handlebars, then turned the bike around and headed for the edge of St. Peter's Square. A carabiniere was sprinting along the barricade, trying to close the breach before the bike arrived. Lange took aim and squeezed off the last two rounds in his magazine. The carabiniere tumbled to the pavement.

Lange sped through the opening in the barricade and leaned the bike south. A moment later, they were gone.

ST. Peter's square was in chaos. Clearly, the first priority of the police would be to secure the area and tend to the victims rather than pursue the man who had wreaked the havoc. Gabriel knew it would take only a matter of seconds for a trained professional to disappear into the labyrinth of Rome. Indeed, he had done it once himself. In a moment, the Leopard, the man who had murdered Benjamin and countless others, would be gone forever.

The motorcycle Gabriel and Father Donati had ridden from the synagogue was where they had left it, resting on its kickstand a few meters from the Bronze Doors. Gabriel still had the keys in his pocket. He climbed into the saddle and roared across the square.

Rounding the end of the colonnade, he turned right, as the assassin had done, and was immediately confronted with a decision. He

 could continue along the perimeter of the city state or turn to the left, toward the southern end of the sprawling Janiculum Park. As Gabriel slowed to make his decision, a tourist with a camera around his neck stepped forward and shouted at him in French: "Are you looking for the priest with a gun?"

The Frenchman pointed down the Borgo Santo Spirito, a narrow cobbled street lined with Vatican office buildings and souvenir shops selling religious articles. Gabriel turned left and opened the throttle. It made sense. If the assassin followed this route of escape, he could disappear into the open spaces of the park. From there he could make his way to the tangled streets of Trastevere in a matter of minutes. From Trastevere he could cross the river to the residential districts of the Aventine Hill.

After a hundred meters, Gabriel banked to the right and sped along the facade of a dusty palazzo. He came to a busy piazza near the river, swerved to the right, and headed up an access ramp leading into the park. At the top of the ramp was a traffic circle outside the entrance of an underground bus terminal. Gabriel thought he saw the assassin for the first time, a motorcyclist dressed in black, with a female passenger on the back. The bike accelerated around the circle and disappeared into the park. Gabriel sped after it.

The roadway was lined with broad gravel walkways and towering umbrella pine. It ran along the spine of the hill and rose gradually, so that after a few seconds Gabriel felt as though he was floating above the city. As he neared the Piazzale Garibaldi, he saw a flash in the heavy traffic, a motorcycle knifing dangerously between cars, a man in black at the handlebars. Entering the chaos of the massive piazzale, Gabriel briefly lost sight of the bike; then he spotted it again, turning onto a smaller road that led down the hill toward Trastevere. Gabriel leaned the bike hard and fought his way through the traffic, ignoring the symphony of horns and curses, and followed after him.

The descent out of the park was a steep series of switchbacks and hairpin turns. The carabinieri motorcycle had more power than the assassin's, and Gabriel did not have the added weight and balance problems of a passenger. He closed the distance quickly, and was soon about thirty meters behind.

Gabriel reached inside his coat and drew the Beretta. He maneuvered the weapon into his left hand and twisted hard on the throttle with his right. The bike roared forward. The woman glanced over her shoulder, then turned and took awkward aim at him with an automatic pistol.