In July 2003, 43-year-old Theresa Binge travelled from Boggabilla to Goondiwindi to visit friends, but would never return home. After an extensive search, her body was found across the border in NSW, setting off an investigation plagued by jurisdictional divides and a lack of definitive evidence. After two decades, police still believe Theresa Binge's murder is solvable, and that one person speaking up could change everything...