Erin Patterson, 51, has lodged an appeal against her July 2023 murder conviction and separately faces an appeal of her sentence; both matters are listed for hearing on August 19–20 in Victoria's Court of Appeal. A jury found Patterson guilty of killing three elderly relatives and attempting to kill a fourth by serving Beef Wellingtons containing death cap mushrooms. She was sentenced to life with a 33-year non-parole period and has consistently maintained the poisoning was accidental. Her appeal argues procedural irregularities during jury sequestration and challenges the admission of location data and social-media messages.
Appeal In 'Mushroom Murder' Case: Erin Patterson's Conviction And Sentence Set For August Hearing
A general view of Erin Patterson’s house in Leongatha, Australia, June 24, 2025. REUTERS/Asanka Brendon Ratnayake
An appeal against Erin Patterson's murder conviction and a separate challenge to her sentence have been scheduled for hearing on August 19 and 20 by the Court of Appeal in Victoria.
Case Background
In July, a 12-member jury found 51-year-old Erin Patterson guilty of murdering three elderly relatives of her estranged husband and attempting to murder a fourth after a 2023 meal. The victims—Gail Patterson, Donald Patterson and Gail's sister Heather Wilkinson—died after eating Beef Wellingtons that prosecutors say were laced with death cap mushrooms. Ian Wilkinson, Heather's husband, survived and was the subject of an attempted murder conviction against Patterson.
Sentence And Appeals
Patterson was sentenced to life in prison with a non-parole period of 33 years, a term reported as one of the longest sentences ever imposed on a woman in Australia. She has consistently maintained her innocence, telling the court throughout an 11-week trial that the poisoning was accidental.
In documents lodged in November, Patterson's legal team argued the conviction should be overturned on several grounds, including an alleged "fundamental irregularity" while the jury was sequestered. They also challenged the admission of certain evidence—such as cell-tower location data and messages from Facebook contacts—arguing those items were irrelevant or unfairly prejudicial. Patterson further alleged her cross-examination by prosecutors was "unfair and oppressive."
Separately, prosecutors filed an appeal in October against the sentence, describing it as "manifestly inadequate." Both the challenge to conviction and the appeal against sentence will be heard together by the Court of Appeal on the scheduled August dates, the Supreme Court of Victoria confirmed.
Local Impact
The case drew nationwide and international attention because of its unusual circumstances and the rarity of using fatal mushrooms in an alleged domestic poisoning. The incident occurred in Leongatha, a town of about 6,000 people roughly 135 km southeast of Melbourne.
(Reporting by Praveen Menon; Editing by Lincoln Feast.)
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