Arkansas Grandmother, Betty Davis, Says She Was Forced to Rob Bank Millionaire Murder Trial: Will Wife Take Stand? Nancy Grace, Dan Abrams discuss Nanette Johnston's defense in husband's death. Millionaire Murder Trial: Cold Case Reopened Suspect Nanette Johnston admits to cheating, stealing from her wealthy husband. Montana Math Teacher Vanishes While Jogging Sherry Arnold disappeared after leaving her house for an early-morning jog. Arkansas Grandmother Forced to Rob Bank? Betty Davis, 73, says a gunman broke into her home and strapped a bomb to her.