She looked around for her tour group leader. The woman had gone back to the escalator to meet the six o’clock tour. As she assembled the group and gave them her memorized introduction, Carla followed discreetly behind, careful not to let the woman spot her. There was always a chance she’d recognize Carla as a member of the last group and would start wondering why this "tourist" had missed her bus. Or that she would notice Carla wasn’t wearing a visitor’s pass.