He boarded a waiting elevator and rode it up to the sixth floor. The door to Suite 612 was located at the end of a corridor, in a small, private alcove. Gabriel ran his fingertips around the jamb, searching for any sign of a foreign object such as a fragment of loose wiring, and held his breath as he inserted the card key into the electronic lock. There was little “premier” about the room he entered, though the view of the canal houses along the Amstel River was one of the finest in the city. A bottle of mediocre champagne was sweating in an ice bucket on the coffee table. The handwritten note said: Welcome back to the Europa, Herr Kiever. Strange, because, to the best of Gabriel’s recollection, Herr Kiever had never stayed there before.

He removed a Nokia mobile phone from his coat pocket. It was indeed a telephone, but it contained several features unavailable on ordinary commercial models, such as a device capable of detecting the signals and electrical impulses of concealed transmitters. He held the phone in front of his face and spent the next five minutes padding slowly round the rooms of the suite, watching the power meter for subtle fluctuations. Satisfied the room had not been bugged, he conducted a second search, this one for evidence of a bomb or any other lethal device. Only then did he pick up the phone on the bedside table and dial Room 611. “I’m here,” he said in German, and immediately set down the receiver.

A moment later there was a gentle knock at the door. The man who entered was several years older than Gabriel, small and bookish, with wispy, unkempt gray hair and quick brown eyes. As usual he seemed to be wearing all his clothing at once: a button-down shirt with ascot, a cardigan sweater, a rumpled tweed jacket. “Lovely accommodations,” said Eli Lavon. “Better than that pensione where we stayed in Rome the night before the Zwaiter hit in seventy-two. Do you remember it, Gabriel? My God, what a dump.”

“We were posing as university students,” Gabriel reminded him. “We can’t pose as students anymore. I suppose that’s one of the few fringe benefits of growing old.”