VANISHED: 11-year-old Mikelle Biggs

January 1999. She was gone in 90 seconds. Eleven-year-old Mikelle Biggs disappeared while riding her sister's bike on their Mesa, Arizona street and waiting for the ice cream truck. Her sister Kimber went inside for less than two minutes, and when she came back out, Mikelle was gone. Authorities believe Mikelle was abducted, but no arrests have ever been made. We investigate the timeline of events, and the story is told through her sister, who at 9 years old was the last person to see Mikelle alive. Now in her 30s, she hasn't given up, and both she and detectives believe Mikelle may be nearby.