Australian Court Rules Mushroom Killer Erin Patterson Must Never Be Released From Prison
Victoria's Court of Appeal rejects her appeal and grants prosecutors' challenge, replacing a 33-year non-parole period with a life term; she is only the second woman in Australia to get that sentence.
An Australian appeals court ruled on Friday that Erin Patterson, who poisoned a family lunch with death cap mushrooms in 2023, must spend the rest of her life in prison with no possibility of parole.
Three judges of the Victoria state Court of Appeal dismissed Patterson's appeal against her convictions and upheld prosecutors' challenge to the leniency of her original sentence. That sentence had included a 33-year non-parole period, which would have let her apply for release at age 82. Under the new ruling, she will never be eligible. Her only remaining option is an application to Australia's High Court, which would be her final appeal.
Justice Stephen McLeish, delivering the decision for the panel, called the offending "extraordinarily cold and calculated." He said the case involved such serious criminality that setting a non-parole period would be inappropriate. The court found that Patterson's intent to kill all four victims lasted almost three weeks after she issued the lunch invitations. She carried out an elaborate series of deceptions, McLeish said, including a false cancer diagnosis she used to explain why her two children would not be at the meal. She also destroyed evidence, denied foraging for mushrooms and repeatedly gave false accounts of where the mushrooms came from. He described the crimes as a cruel breach of trust. Prosecutors had argued at an August hearing that the original sentence did not reflect how calculated the crime was.
Patterson is only the second woman in Australia to receive a life sentence without the possibility of parole. The first was Katherine Knight, a meatworker sentenced in New South Wales in 2001 for killing her partner, John Price, in 2000.
The convictions stem from a family lunch Patterson hosted at her rural home in Leongatha, Victoria, in July 2023. She served beef Wellington containing death cap mushrooms. She has insisted the mushrooms were added by accident. Three guests died: her parents-in-law, Don and Gail Patterson, and Gail's sister, Heather Wilkinson. Heather's husband, Ian Wilkinson, a Baptist pastor, survived after weeks in the hospital. Patterson was convicted of his attempted murder. Wilkinson testified about his grief, saying he felt only half alive without his wife.
In 2025, Patterson received three life sentences for murder and 25 years for attempted murder. Trial judge Christopher Bale said in September 2025 that there was a "substantial chance" she could face years of solitary confinement. She is held in the Gordon Unit at the Dame Phyllis Frost Centre in Melbourne, a high-security unit for prisoners considered at high risk from other inmates. She chose not to attend court and watched the verdicts by video link from prison.
Her estranged husband, Simon Patterson, was invited to the lunch but declined the day before. He testified at a pretrial hearing that he turned down the invitation out of fear. Pretrial evidence released after her conviction also detailed his suspicion that she had previously tried to kill him.
The case has drawn intense international attention and has inspired podcasts, books and screen adaptations. Actor Melanie Lynskey is set to play Patterson in a six-episode Paramount+ series, which she also executive-produces, dramatizing the 97 days between the fatal lunch and Patterson's arrest.
