NEW YORK TIMES BESTSELLER   It came in a plain brown wrapper, no return address—an audiocassette recording of a horrifying, soul-lacerating scream, followed by the sound of a childlike voice chanting: “Bad love. Bad love. Don’t give me the bad love.” For Alex Delaware the tape is the first intimation that he is about to enter a living nightmare. Others soon follow: disquieting laughter echoing over a phone line that suddenly goes dead, and a chilling act of trespass and vandalism. He has become the target of a carefully orchestrated campaign of vague threats and intimidation rapidly building to a crescendo as harassment turns to terror, mischief to madness.   “A wonderful, roller-coaster ride . . . a guaranteed page-turner.
