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Erin Patterson Guilty of Murdering Three In-Laws With Poisoned Beef Wellington

She faces sentencing later this year under Victorian law with a maximum 25-year term for murder.

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50-year-old Erin Patterson was convicted of murdering her mother-in-law, Gail Patterson, her father-in-law, Donald Patterson, and Gail’s sister, Heather Wilkinson.
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Overview

  • A Victorian Supreme Court jury found Patterson guilty of killing her parents-in-law Don and Gail Patterson and Gail’s sister Heather Wilkinson, and of attempting to murder Heather’s husband, Ian Wilkinson.
  • Prosecutors introduced mobile-tower data, digital forensic analysis and survivor testimony to show Patterson foraged death cap mushrooms, dehydrated and powdered them before concealing the toxin in individual beef Wellington servings.
  • The Crown detailed Patterson’s deceptions, including falsely claiming to have cancer, feigning illness after the lunch and disposing of a mushroom dehydrator before police could seize it.
  • The nine-week trial in Morwell featured more than 50 witnesses and in excess of 120 exhibits under strict reporting restrictions, one of Australia’s most closely watched criminal cases.
  • Patterson maintains the poisonings were a tragic accident and insists she believed her pantry mushrooms were safe, a defense the jury ultimately rejected.