Nick and Kate settle into the community. The inhabitants include intelligent dogs that escaped from the projects that Kate's father worked on. These act as companions, guards, nannies, and even lie detectors, using their sense of smell. Nick rewrites the "computer tapeworm" that prevents the calls to Hearing Aid being monitored. While at G2S he became aware of massive backups of data being performed, clearly in anticipation of a major network outage. The Hearing Aid worm is designed to scramble network traffic if attacked, but Nick realises that it could be destroyed if the authorities were prepared for the effects and ready to recover from them. His new worm, which he calls a "phage", cannot be removed without dismantling the entire network.