Article continues below advertisementThe latest development in the search for Nancy Guthrie has sparked renewed hope that whoever allegedly abducted the 84-year-old might be caught. ABC News reported last week that "potentially critical" DNA evidence recovered from Nancy's Tucson, Ariz., home is finally in FBI hands. The DNA, said to be a hair sample, was previously sent to a Florida lab by the Pima County Sheriff's Department when it was first collected.