State of mind - John Katzenbach

A new state is forming in America, carving out land across other state boundaries to form a secure sanctuary for the law-abiding who have lost the fight against the spiralling crime and decadence of the late 20th century. Known to the authorities but not to the populace, a serial killer has managed to by-pass the strict controls and is operating anonymously in the supposed new Utopia. His modus operandi is recognised from similar, but 20-year-old killings elsewhere and there is only one thing which will entrap him - his own family who were the only people to escape from him. His son agrees to form part of the bait, but before he does he has to confront the knowledge that he was fathered by a monster and also decide whether if he had to, he would be able to kill his own parents.