STATE OF MIND Twenty-five years ago, Jeffrey and Susan Clayton fled their tyrannical father--a man who was later suspected in the heinous murder of a young student. Though the father was never charged, he committed suicide. Or so it seemed. For someone has sent Susan a cryptic note. Once deciphered, it carries a terrifying message: I have found you.Meanwhile, a serial killer has invaded a tightly controlled community. Is Jeffrey Clayton's father the source of this latest killing spree? The authorities think so--and they present Jeffrey, now a noted expert on serial killers, with a challenge: Find the butcher responsible for the newborn spate of carnage. Find your father. . . .