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In 2003 in the remote QLD/NSW border town of Goondiwindi, 43-year-old Aboriginal grandmother Theresa Binge went missing. Twelve days later, her badly beaten body was found dumped in a concrete culvert outside of town. Despite strong leads, the investigation failed to find her killer. Fifteen years on, Theresa’s family are still desperately seeking answers. In this two-part episode, we retrace Theresa’s last steps, find new leads and speak with authorities.