They followed him along a short, carpeted hallway that a van could have been driven through. "Use the other card," he told her. She shifted the carton to her left arm and swiped the second card. He opened the very large ebony door, which she saw was a good four inches thick, and they stepped into a space that might have been the central concourse in the national airport of some tiny, hyperwealthy European nation, a pocket Liechtenstein founded on the manufacture of the most expensive minimalist light fixtures ever made.