a brutal murder exposes a johnny carter and larry markowski were in the middle of a bitter divorce. and like many splits, there was a custody war over their 11 year old daughter, bethany. that battle would turn to heartbreak when bethany left for a weekend with her dad, and her mother would never see her again. a little girl from a broken family reluctantly packs her bags. >> she started getting real nervous. >> her mom claims she's nervous over her dad having custody for the weekend. >> what are you going to do if daddy doesn't bring me home? >> and those fears were about to become real. >> and she said, i'll see you at 5:00. right, mama? >> when 11 year old bethany markowski disappears forever haunting her distraught mother in tennessee. >> she's sweet and funny and has an attitude. she has a very good heart. >> it took nearly two decades before bethany's mother, johnny, was even able to openly speak about her daughter, who vanished without a trace. >> after a while. you don't remember what their life is like or or what they smell like. i guess i miss her smile the most. she alway