“Why do we have a new computer?”

“Because you bought the old one when the Hapsburgs still ruled Austria.”

“Did I authorize the purchase of a new computer?”

The question was not threatening. The girls managed the office. Papers were placed beneath his nose, and usually he signed them without looking.

“No, Eli, you didn’t approve the purchase. My father paid for the computer.”

Lavon smiled. “Your father is a generous man. Please thank him on my behalf.”

The girls resumed their debate. As usual it resolved in Sarah’s favor. Reveka wrote out the list and threatened to pin it to Lavon’s sleeve. Instead, she stuffed it into his coat pocket for safekeeping and gave him a little shove to send him on his way. “And don’t stop for a coffee,” she said. “We’re starving.”

It was almost as difficult to leave Wartime Claims and Inquiries as it was to enter. Lavon punched a series of numbers into a keypad on the wall next to the entrance. When the buzzer sounded, he pulled open the interior door and stepped into the security chamber. The outer door would not open until the inner door had been closed for ten seconds. Lavon put his face to the bulletproof glass and peered out.

On the opposite side of the street, concealed in the shadows at the entrance of a narrow alleyway, stood a heavy-shouldered figure with a fedora hat and mackintosh raincoat. Eli Lavon could not walk the streets of Vienna, or any other city for that matter, without ritualistically checking his tail and recording faces that appeared too many times in too many disparate situations. It was a professional affliction. Even from a distance, and even in the poor light, he knew that he had seen the figure across the street several times during the last few days.

He sorted through his memory, almost as a librarian would sort through a card index, until he found references to previous sightings. Yes, here it is. The Judenplatz, two days ago. It was you who was following me after I had coffee with that reporter from the States. He returned to the index and found a second reference. The window of a bar along the Sterngasse. Same man, without the fedora hat, gazing casually over his pilsner as Lavon hurried through a biblical deluge after a perfectly wretched day at the office. The third reference took him a bit longer to locate, but he found it nonetheless. The Number Two streetcar, evening rush. Lavon is pinned against the doors by a florid-faced Viennese who smells of bratwurst and apricot schnapps. Fedora has somehow managed to find a seat and is calmly cleaning his nails with his ticket stub. He is a man who enjoys cleaning things, Lavon had thought at the time. Perhaps he cleans things for a living.

Lavon turned round and pressed the intercom. No response.Come on, girls. He pressed it again, then looked over his shoulder. The man in the fedora and mackintosh coat was gone.

A voice came over the speaker. Reveka.

“Did you lose the list already, Eli?”

Lavon pressed his thumb against the button.

“Get out! Now! ”

A few seconds later, Lavon could hear the trample of footfalls in the corridor. The girls appeared before him, separated by a wall of glass. Reveka coolly punched in the code. Sarah stood by silently, her eyes locked on Lavon’s, her hand on the glass.

He never remembered hearing the explosion. Reveka and Sarah were engulfed in a ball of fire, then were swept away by the blast wave. The door blew outward. Lavon was lifted like a child’s toy, arms spread wide, back arched like a gymnast. His flight was dreamlike. He felt himself turning over and over again. He had no memory of impact. He knew only that he was lying on his back in snow, in a hailstorm of broken glass. “My girls,” he whispered as he slid slowly into blackness. “My beautiful girls.”

IT WAS Asmall terra-cotta church, built for a poor parish in thesestière of Cannaregio. The restorer paused at the side portal beneath a beautifully proportioned lunette and fished a set of keys from the pocket of his oilskin coat. He unlocked the studded oaken door and slipped inside. A breath of cold air, heavy with damp and old candle wax, caressed his cheek. He stood motionless in the half-light for a moment, then headed across the intimate Greek Cross nave, toward the small Chapel of Saint Jerome on the right side of the church. The restorer’s gait was smooth and seemingly without effort. The slight outward bend to his legs suggested speed and sure-footedness. The face was long and narrow at the chin, with a slender nose that looked as if it had been carved from wood. The cheekbones were wide, and there was a hint of the Russian steppes in the restless green eyes. The black hair was cropped short and shot with gray at the temples. It was a face of many possible national origins, and the restorer possessed the linguistic gifts to put it to good use. In Venice, he was known as Mario Delvecchio. It was not his real name.

The altarpiece was concealed behind a tarpaulin-draped scaffold. The restorer took hold of the aluminum tubing and climbed silently upward. His work platform was as he had left it the previous afternoon: his brushes and his palette, his pigments and his medium. He switched on a bank of fluorescent lamps. The painting, the last of Giovanni Bellini’s great altarpieces, glowed under the intense lighting. At the left side of the image stood Saint Christopher, the Christ Child straddling his shoulders. Opposite stood Saint Louis of Toulouse, a crosier in hand, a bishop’s miter atop his head, his shoulders draped in a cape of red and gold brocade. Above it all, on a second parallel plane, Saint Jerome sat before an open Book of Psalms, framed by a vibrant blue sky streaked with gray-brown clouds. Each saint was separated from the other, alone before God, the isolation so complete it was almost painful to observe. It was an astonishing piece of work for a man in his eighties.

The restorer stood motionless before the towering panel, like a fourth figure rendered by Bellini’s skilled hand, and allowed his mind to float away into the landscape. After a moment he poured a puddle of Mowolith 20 medium onto his palette, added pigment, then thinned the mixture with Arcosolve until the consistency and intensity felt right.

He looked up again at the painting. The warmth and richness of the colors had led the art historian Raimond Van Marle to conclude the hand of Titian was clearly in evidence. The restorer believed Van Marle, with all due respect, was sadly mistaken. He had retouched works by both artists and knew their brushwork like the sun lines around his own eyes. The altarpiece in the Church of San Giovanni Crisostomo was Bellini’s and Bellini’s alone. Besides, at the time of its production, Titian was desperately attempting to replace Bellini as Venice ’s most important painter. The restorer sincerely doubted Giovanni would have invited the young headstrong Titian to assist in so important a commission. Van Marle, had he done his homework, would have saved himself the embarrassment of so ludicrous an opinion.

The restorer slipped on a pair of Binomags and focused on the rose-colored tunic of Saint Christopher. The painting had suffered from decades of neglect, wild temperature swings, and the continuous onslaught of incense and candle smoke. Christopher’s garments had lost much of their original luster and were scarred by the islands ofpentimenti that had pushed their way to the surface. The restorer had been granted authority to carry out an aggressive repair. His mission was to restore the painting to its original glory. His challenge was to do so without making it look as though it had been churned out by a counterfeiter. In short, he wished to come and go leaving no trace of his presence, to make it appear as if the retouching had been performed by Bellini himself.