A devastating revelation by a psychic leaves no doubt in my mind' The date is etched in Shanelle Dawson's memory: on December 19, 2009, having spoken to a psychic, she finally voiced her fear that her father, Chris, a charismatic former rugby league star, had murdered her mother - in order to marry his schoolgirl lover.
They became even more suspicious when Dawson, a schoolteacher, moved one of his former pupils into the family home and the marital bedroom in Lyn's place, just two days after her disappearance in 1982.
Lyn's family, especially her brother Greg Simms, had been sceptical about Chris Dawson's story from the start.
Her father's story was that Lyn, 33, had abandoned her children to go and join a commune, though strangely she had taken nothing with her.
Shanelle Dawson: 'I now firmly believe my father killed my mum.