Billy Hoffman's Letter to the Cowell's Changed Everything

Billy Hoffman had been convicted for Ricky Cowell's murder. Amy and Jennifer were still under suspicion, but the case didn't seem to go anywhere after that. In 2002, there was a letter in the mailbox that would change everything. It was Billy Hoffman's confession of his part in the murder. Manna from Heaven is on CNN at 10 p.m. ET/PT.