He'd been shot in the head, decapitated, and set on fire. Who could have turned on the real-estate ace with such bloodthirsty fury? Even before the remains were found, circumstantial evidence was building against Rudin's 52-year-old wife, Margaret, who stood to inherit a handsome share of her husband's fortune. Rudin's friends also suspected Margaret, and the victim has thought that his wife was trying to poison him when he was alive. Then a chilling...