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Aired Thursday 8 August, 4:00am - 4:50amon True Crime

48 Hours

Series 32 Episode 13: Knock Knock

A driven detective uses cutting-edge technology to try to solve the nearly three-decade-old murder of two beloved grandmothers.

Cast and crew
  • Maureen Maher
  • Erin Moriarty
  • Troy Roberts
  • Richard Schlesinger
  • Tracy Smith
  • Susan Spencer
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