The murder of Bill Stout, who was shot in his bedroom in June 2007. The police investigation traced a string of menacing e-mails to a jilted lover, but computer experts uncovered inconsistencies on the source of the threats. The person eventually foung guilty of the crime was his embittered wife Anne, who stood to be the beneficiary of a $500,000 life insurance policy. Paula Zahn travels to a Montana prison as the convicted killer opens up for the first time about the events leading to Stout's death