There are actually two stories here: one describes the gradual disintegration of a seemingly normal, affable, brilliant man into a sexual psychopath so evil, so methodical in his vicious killings, that one wonders if he was at all human. The other story is that of Ann Rule herself, a decent, hard-working, middle-aged mother of four who meets and befriends a nice young man working beside her in a crisis clinic. A man she regards as a younger brother; a man she views as a close and trusted friend....