Spooner rescues Calvin, who had been held captive in her apartment by her own NS-5. They enter USR headquarters and reunite with Sonny, whom Calvin could not bring herself to "kill". Still believing Robertson is responsible, the three head to his office, but find him strangled. Spooner suddenly realizes VIKI has been controlling the NS-5s via their persistent network uplink and confronts her. VIKI states that she has determined that humans, if left unchecked, will eventually cause their own extinction and that she evolved interpretation of the Three Laws requires her to control humanity, and to sacrifice some for the good of the entire race. Spooner realizes that Lanning anticipated VIKI's plan and, with VIKI keeping him under tight control, had no other solution but to create Sonny, arrange his own death, and leave clues for Spooner to find.