Nathaniel, Stacey and Gareth Train were heavily armed and prepared for a siege at the Wieambilla property in regional Queensland when they shot dead young Constables Matthew Arnold and Rachel McCow and innocent neighbour Alan Dare.
Two other officers, Constable Randall Kirk and Constable Keely Brough, miraculously escaped with their lives.
The trio were later shot dead by specialist police officers after a bloody battle.
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Now, the daughter shares how a “normal” upbringing ended in her name being connected to a crime that sent shockwaves across the nation.
“Grieving three of your family members is hard enough and then finding out what they did,” she said.
Watch the first part of the exclusive two-part interview on Sunday on 9News at 6pm.