He began to run. He had never been much of an athlete, and years of academic pursuits had robbed his body of fitness. The weight of the laptop computer in his briefcase was like an anchor. With each stride the case banged against his hip. He secured it with his elbow and held the strap with his other hand, but this gave his stride an awkward galloping rhythm that slowed him even more. He considered jettisoning it but clung to it instead. In the wrong hands the laptop was a treasure trove of information. Personnel, surveillance photographs, communications links, bank accounts…

He stumbled to a stop at the Euston Road. Glancing over his shoulder, he saw his pursuer still plodding methodically toward him, hands in his pockets, eyes down. He looked to his left, saw empty asphalt, and stepped off the curb.

The groan of the lorry horn was the last sound Ali Massoudi ever heard. At impact the briefcase broke free of him. It took flight, turned over several times as it hovered above the road, then landed on the street with a solid thud. The man in the oilskin raincoat barely had to break stride as he bent down and snared it by the strap. He slipped it neatly over his shoulder, crossed the Euston Road, and followed the evening commuters into King’s Cross.

2. Jerusalem

Jerusalem

THE BRIEFCASE HAD REACHED Paris by dawn, and by eleven it was being carried into an anonymous-looking office block on King Saul Boulevard in Tel Aviv. There the professor’s personal effects were hastily inspected, while the hard drive of his laptop computer was subjected to a sustained assault by a team of technical wizards. By three that afternoon the first packet of intelligence had been forwarded to the Prime Minister’s Office in Jerusalem, and by five a manila file folder containing the most alarming material was in the back of an armored Peugeot limousine heading toward Narkiss Street, a quiet leafy lane not far from the Ben Yehuda Mall.

The car stopped in front of the small apartment house at Number 16. Ari Shamron, the twice former chief of the Israeli secret service, now special adviser to the prime minister on all matters dealing with security and intelligence, emerged from the backseat. Rami, the black-eyed chief of his personal security detail, moved silently at his heels. Shamron had made countless enemies during his long and turbulent career, and because of Israel’s tangled demographics, many were uncomfortably close. Shamron, even when he was inside his fortresslike villa in Tiberias, was surrounded always by bodyguards.