S2, E1: 12-year-old Autumn loves her new BMX. But in 2012, Autumn - and her beloved new bike - go missing. A trail is left behind on Facebook, but where will it lead?

S2, E1: 12-year-old Autumn loves her new BMX. But in 2012, Autumn - and her beloved new bike - go missing. A trail is left behind on Facebook, but where will it lead?