No more than a second or two after the whole chain of glitches began, the second-and third-floor display areas were plunged into darkness. As a babble of frightened voices filled the air, Carla made her move. She’d kept a careful watch on the tour guide, who now was shouting at her group to remain calm. Carla headed straight for the voice and deliberately jostled the woman in the dark. At the same time, she snatched the tour guide’s employee badge. Given the mob of confused and frightened people the woman had to deal with, Carla doubted she’d miss the badge for some time. If she did discover it was gone, she would probably assume it had fallen off and was lying somewhere on the floor of the display area.