It was January 2, 1999, and 9-year-old Kimber Biggs and her 11-year-old sister were playing in the street in their Mesa neighborhood while waiting for an ice cream truck. After a while, Mikelle's sister got cold and went inside for her jacket; her sister stayed to wait, clutching the quarters she got from her mom to buy ice cream. When she returned minutes later, her sister had vanished, her bike lying abandoned on the sidewalk beside two quarters strewn in the street.