Erin Patterson was convicted of murdering three relatives with toxic beef Wellington

Victoria, Australia — In a chilling case that gripped Australia and made global headlines, a 12-member jury has found Erin Patterson, 50, guilty of three counts of murder and one count of attempted murder after a deadly meal served at her home in Leongatha, Victoria, in July 2023.

The victims—her estranged in-laws Gail and Donald Patterson, and Heather Wilkinson—all died after eating a homemade beef Wellington laced with death cap mushrooms, one of the most lethal fungi known. A fourth guest, Ian Wilkinson, barely survived and later testified against Patterson during the 10-week trial.

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Mushroom Murders: A Deadly Lunch Invitation

Patterson had invited her estranged husband’s parents and his aunt and uncle to lunch. Her husband, Simon Patterson, declined the invitation, saying he felt “uncomfortable.” She served the guests individual portions of beef Wellington, traditionally made with mushrooms, steak, and pastry.

The next day, all four guests were hospitalized with severe gastrointestinal symptoms. Over the following days, three of them died from organ failure linked to Amanita phalloides poisoning. The lone survivor, Ian Wilkinson, spent weeks in intensive care.

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Patterson’s Shifting Story

Throughout the investigation and trial, Patterson repeatedly changed her account of what happened:

• She initially denied using foraged mushrooms but later admitted she had.
• She claimed she suffered from diarrhoea, but medical records showed no signs of mushroom poisoning.
• She failed to inform doctors that death cap mushrooms could be involved, even as her guests lay critically ill.
• She denied owning a food dehydrator used in the preparation, only for police to later recover it, with traces of toxic fungi still present.
• Police also discovered photos of wild mushrooms on her dehydrator and internet searches linking her to local sightings of death caps.

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“I Lied Out of Embarrassment”

On the stand, Patterson admitted to lying about having cancer, telling her guests she was ill in order to initiate a conversation about whether to tell her children. When pressed, she said she was actually considering weight-loss surgery, but had been too embarrassed to admit it.

Prosecutors accused her of lying strategically to mislead investigators and cover her tracks, including performing a factory reset on her phone during the investigation.

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Estranged Family and Legal Fallout

Erin Patterson married Simon Patterson in 2007. Though the couple separated in 2015, they shared joint custody of their children. Their relationship, once cordial, reportedly deteriorated in 2022 over child support issues.

Simon, who was not present at the deadly lunch, did not fall ill but told the court he was aware of past tensions between Patterson and some members of his family.

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Sentencing Ahead

Patterson now faces life in prison. Her sentencing has yet to be scheduled. The case has drawn comparisons to other infamous deception crimes, including the Belle Gibson scandal in Australia, where false medical claims were used for financial gain.

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