http://a.abcnews.com/2020/story?id=7577706&page=1 Mikelle Biggs, 11, was alone for less than two minutes when she vanished. Darien and Tracy Biggs' hunt for their daughter leads them to an Arizona prison. It was dusk on Jan. 2, 1999, when Mikelle and her younger sister Kimber -- lured outside by the sound of an ice cream truck -- waited patiently at a Mesa, Ariz., street corner to buy treats. Kimber got cold and walked home, just four houses away, to get her jacket. When she returned, Mikelle was gone.