It was October 7, 1992 in Morphett Vale, South Australia, and 12 year-old Rhianna Barreau was on a school holiday.  Rhianna, who lived with her mother and brother, wanted to buy a Christmas card for her pen pal in America (remember, this was 1992 and it took awhile for a card to get from Australia to the U.S.).  The family lived only about a mile or so away from a local shopping center, so when Rhianna asked her Mom if she could walk there to buy the card for her American friend, Mom said okay.  When Mom came home from work later that day, the television was blaring, one of Rhianna's favorite record albums was lying on the floor - and that Christmas card Rhianna had wanted to purchase was on the table.  But Rhianna was nowhere to be found.  And to this day, she's still missing.  In this episode, Melissa retells the details of Rhianna's last known whereabouts, the witnesses who saw her that day walking back home - the mysterious fact that there was no sign of forced entry into the house - the fact that none of Rhianna's personal belongings were missing - and the lingering, haunting question: Who did Rhianna open the door to that fateful afternoon?  VISIT OUR SPONSOR - KLEANSPA BATH & BODY by Jennifer Hardaway - Get 15% off your total order by visiting www.kleanspa.com and entering promo code TIPSTERS at checkout.  Kleanspa - prepare to smell delicious!