Forensic Files

The serial murders that shook Melbourne

Casefile

  • Jun 24, 2023
  • 1:33:10
  • Full Episode

Case 252: Margaret Maher, Mersina Halvagis & Nicole Patterson *** Content warning: serial rapist and killer, sexual assault, stalking ***

When Melbourne women Margaret Maher, Mersina Halvagis and Nicole Patterson were found brutally murdered in the late 1990s, police didn’t immediately link the crimes. The killer left behind no incriminating evidence, indicating he was an experienced offender who knew how to beat the system.

Little did investigators know, the story began almost 30 years earlier when a 15-year-old boy knocked on his neighbour’s door and asked to borrow a knife.

CREDITS

Narration – Anonymous Host Research & writing – Milly Raso Creative direction – Milly Raso Production and music – Mike Migas Music – Andrew D.B. Joslyn

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RESOURCES

For all credits and sources, please visit https://casefilepodcast.com/case-252-margaret-maher-mersina-halvagis-nicole-patterson

Brief Summary

Peter Dupas, a serial killer, is linked to multiple brutal murders of women in Melbourne, showcasing his violent history and psychological issues.

Key points

  • Discovery of a Body. Pensioners Ronald and Muriel McDonald discover a human body while rummaging through rubbish.
  • Messina Halivargas Murdered. Messina Halivargas is found brutally murdered in a cemetery, raising alarm in the community.
  • Nicole Patterson's Gruesome Murder. Nicole Patterson is found murdered in her home, with signs of a brutal attack.
  • The Discovery of Clues. Scraps of note paper found next to Nicole lead detectives to a suspect named Malcolm.
  • The Attack on Anne Ackhurst. Peter du pass attacks Anne Ackhurst with a knife, claiming he can't stop himself.
  • Peter du pass's Release. Despite being a danger to society, Peter du pass is released on parole after serving half his sentence.

Episode highlights

Tension

85/ 100High tension

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