John Annibel, 40, was the bad half of a set of twins. James stayed out of trouble but John, with his hair-trigger temper and paranoia, was different. On Thanksgiving weekend, 1998, Debbie Sloan, 42, sat down next to a stranger in a bar. She wound up gasping her life away, slowly strangled to death by Annibel. He then dumped her nude body in a ravine in North California's secluded redwood forests. In September, 1999, thanks to the efforts of Mendocino County investigators, Annibel was convicted of Debbie Sloan's murder. But what of his other alleged crimes?In 1976, 15-year-old Sherry Lynn Smith was last seen alive heading toward Annibel's car. In 1980, Annibel's live-in girlfriend Andrea LaDeRoute vanished-until her skull was discovered in 2002. Georgina Pacheco was found raped and strangled in 1988.