Alfie Rentman, one of the shooters who killed 18 classmates on a school bus, is still free. He's now a cop killer as well after he shoots officer Walt Martin in the tunnels where they were searching for him. The ongoing search of the underground maze finds a room Rentman used. It's also the place where he left a clue for them to find him. With Lt. Koto recovering from his wounds, Terry is made lieutenant and put in charge of tracking Rentman. The boys parents insist that Alfie is a severe schizophrenic and often delusional. When the police do track him down, they find he has a hostage and is apparently prepared to die.
—garykmcd