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Victoria’s Court of Appeal dismissed Erin Patterson’s challenge to her murder convictions on October 30 2026 according to the judgment handed down by a three-judge panel in Melbourne. The court simultaneously upheld a prosecution appeal against her sentence finding the non-parole period of 33 years manifestly inadequate for what it termed shocking criminality. Patterson who appeared by video link from prison showed no emotion as Justice Stephen McLeish delivered the rulings on behalf of the panel that included Justices Lesley Taylor and Peter Kidd.
Erin Patterson was convicted by a jury in July 2025 of three counts of murder and one count of attempted murder following an 11-week trial in the Supreme Court of Victoria as reported across multiple Australian outlets including The Age and ABC News. The 52-year-old had served her estranged husband’s parents Don Patterson and Gail Patterson both aged 70 as well as Gail’s sister Heather Wilkinson aged 66 a meal of beef Wellingtons laced with deadly death cap mushrooms at her Leongatha home on July 29 2023. Ian Wilkinson Heather’s husband survived the poisoning after spending weeks in intensive care and undergoing extensive treatment for organ failure.
Patterson’s legal team advanced seven grounds of appeal primarily focusing on a jury accommodation error that placed panel members in the same hotel as prosecutors a police witness and journalists during the original trial according to coverage by SBS News and The Guardian. The Court of Appeal examined whether this arrangement could have compromised the fairness of the proceedings but concluded there was no objective basis for such a finding. All grounds were rejected with the court affirming that the jury had properly discharged its duty to reach verdicts according to the law.
In allowing the Director of Public Prosecutions’ appeal against sentence the judges determined that Patterson’s crimes were extraordinarily cold and calculated and required denunciation in the strongest terms. “This offending was extraordinarily cold and calculated and stands to be denounced in the strongest terms” Justice McLeish stated in the decision. The panel found Patterson’s murderous intent had been sustained for nearly three weeks from the time of the invitations through to the preparation and serving of the fatal meal involving a cruel breach of trust against extended family members.
Court records and timelines published by Nine News and the BBC establish that Patterson invited the group for lunch amid family tensions with her estranged husband Simon who ultimately did not attend the gathering. All four diners became ill within hours and were hospitalised with severe symptoms leading to multiple organ failure. Don Patterson died on August 5 2023 while Gail Patterson and Heather Wilkinson died the previous day with forensic tests later confirming the presence of death cap mushroom traces in a dehydrator Patterson had discarded at a local tip.
The case attracted worldwide attention becoming one of Australia’s most closely followed criminal matters with the original sentencing hearing in September 2025 broadcast live to the public for the first time in Victorian history according to reports from CNN and Wikipedia’s summary of events. Prosecutors had argued at sentencing that the premeditation false statements about foraging the mushrooms and destruction of evidence warranted the maximum penalty without parole eligibility. Patterson now has 28 days to decide whether to seek special leave to appeal to the High Court of Australia her final potential avenue for challenging the outcome.
