He paused for a moment on the garden walkway and looked up. It was a dowdy little building of Jerusalem limestone, three floors in height, with a large eucalyptus tree in front that cast a pleasant shadow over the front balconies. The limbs of the tree were swaying in the first cool wind of autumn, and from the open window on the third floor came the sharp odor of paint thinner.

Shamron, as he entered the foyer, glanced at the mailbox for apartment number three and saw it was absent a nameplate. He mounted the stairs and tramped slowly upward. He was short of stature and was dressed, as usual, in khaki trousers and a scuffed leather jacket with a tear in the right breast. His face was full of cracks and fissures, and his remaining fringe of gray hair was cropped so short as to be nearly invisible. His hands were leathery and liver-spotted and seemed to have been borrowed from a man twice his size. In one was the file.

The door was ajar when he arrived on the third-floor landing. He placed his fingers against it and gently pushed. The flat he entered had once been meticulously decorated by a beautiful Italian-Jewish woman of impeccable taste. Now the furniture, like the beautiful Italian woman, was gone, and the flat had been turned into an artist’s studio. Not an artist, Shamron had to remind himself. Gabriel Allon was a restorer—one of the three or four most sought-after restorers in the world. He was standing now before an enormous canvas depicting a man surrounded by large predatory cats. Shamron settled himself quietly on a paint-smudged stool and watched him work for a few moments. He had always been mystified by Gabriel’s ability to imitate the brushstrokes of the Old Masters. To Shamron it was something of a parlor trick, just another of Gabriel’s gifts to be utilized, like his languages or his ability to get a Beretta off his hip and into firing position in the time it takes most men to clap their hands.

“It certainly looks better than when it first arrived,” Shamron said, “but I still don’t know why anyone would want to hang it in his home.”

“It won’t end up in a private home,” Gabriel said, his brush to the canvas. “This is a museum piece.”

“Who painted it?” Shamron asked abruptly, as though inquiring about the perpetrator of a bombing.

“Bohnams auction house in London thought it was Erasmus Quellinus,” Gabriel said. “Quellinus might have laid the foundations, but it’s clear to me that Rubens finished it for him.” He moved his hand over the large canvas. “His brushstrokes are everywhere.”

“What difference does it make?”

“About ten million pounds,” Gabriel said. “Julian is going to do very nicely with this one.”