As he talks movingly about dealing with the anguish of his daughter Melanie Hall being murdered, dad Steve says he has a growing fear he will die before the case is solved.
NHS worker Melanie, who would have turned 50 this year, was 25 when she vanished from a nightclub in 1996. She was never seen alive again.
Her remains were found next to a motorway slip road 13 years later in 2009. Although 11 arrests have been made over the years, no one has ever been charged with her murder.
Each arrest was a moment of hope for her family – and it has been a blow each time the person was released. Steve, 76, believes the cold case investigation, codenamed Operation Denmark, will solve the mystery one day.
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