She hung up with a satisfied smile. At least this part was going according to plan. Once again, Corwin had come through for her. Worried that the Movement Match program would be discovered if he left it in Mitsuhama’s computer system for any length of time, he’d wiped it as soon as Carla stepped out of the elevator. In its place, he’d rigged a simpler and less detectable "glitch." He’d altered the programming of both the camera in the elevator and the side corridor on the thirtieth floor that led to it so that they were being fed a continuous loop of previously recorded data. According to the information provided by these cameras, both the elevator and corridor were now "empty"—and would remain that way, even when Carla passed through them. Carla would be invisible until she exited the elevator and turned the corner into the main hallway on the thirtieth floor. With luck, any security guards watching the monitors would assume that she had come out of a nearby office. She’d even mime closing a door behind her, to complete the illusion. With luck, they’d assume that Evelyn Belanger was still down in the lab.