In June 1989, Tina Bell headed out to meet friends, after promising her little brother she'd return home to camp out in the garden.But her family would never see her again.
And after 10 months of frantic searching, their worst fears became a horrific reality.Tina's skull, shoulder blade and collarbone were discovered by two youths shooting pigeons on wasteland near ICI industrial works.
The sadistic killer, and the rest of her remains, have never been found. Several theories were made about what happened to her - from her body being dissolved in a chemical bath to her being horrifically dismembered.
But no definitive answer has ever been released. Just five months after Tina went missing, local thug Billy Dunlop - one of the last men to have seen her alive - murdered 22-year-old Julie Hogg, also from the Teesside town of Billingham.In 2006, Dunlop was convicted of murdering Julie and he remains in prison.
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