No emblem hung over its entrance, no brass lettering proclaimed the identity of its occupant. In fact, there was nothing at all to suggest it was the headquarters of one of the world’s most feared and respected intelligence services. A closer inspection of the structure, however, would have revealed the existence of a building within a building, one with its own power supply, its own water and sewer lines, and its own secure communications system. Employees carried two keys. One opened an unmarked door in the lobby; the other operated the lift. Those who committed the unpardonable sin of losing one or both of their keys were banished to the Judean Wilderness, never to be seen or heard from again. There were some employees who were too senior, or whose work was too sensitive, to show their faces in the lobby. They entered the building “black” through the underground parking garage, as Gabriel did thirty minutes after his flight from Geneva touched down at Ben-Gurion Airport.
