An icon of a double-headed arrow appeared on the wall of the elevator, next to the door. Next to it were the words: HOLD DOOR and a Japanese character that probably meant the same thing. Carla hit it, then stepped out of the comforting light of the elevator and into the shadow-filled room. As she’d hoped, the elevator doors remained open behind her. They probably wouldn’t close again until the elevator was summoned from upstairs. If they did, Carla would know that trouble was on its way.