Erin Patterson Loses Appeal and Will Spend Life in Prison Without Parole Over Mushroom Murders

Erin Patterson will spend the rest of her life in prison after Victoria’s Court of Appeal dismissed her challenge to three murder convictions and, in the same sitting, removed the only prospect of release that her original sentence had left open.

The three-judge court ruled on Friday that the 33-year non-parole period imposed when Patterson was sentenced last year did not reflect the seriousness of her crimes, according to reports of the judgment from the Australian Associated Press, Reuters and the Associated Press. The judges set that period aside and fixed no new one, a step that leaves Patterson, who was convicted over a lunch laced with death cap mushrooms in 2023, with no date on which she can seek parole.

“This offending was extraordinarily cold and calculated and stands to be denounced in the strongest terms,” Justice Stephen McLeish said on behalf of the court, according to the Associated Press. “In all the circumstances, after anxious consideration, we have concluded that the case involved such shocking criminality that it is inappropriate to fix a non-parole period,” he added.

Patterson appeared by video link from prison for the decision and did not visibly react as it was read aloud, the Australian Associated Press reported. She stared straight ahead and at times closed her eyes, according to that account. The hearing lasted about 15 minutes, the Guardian reported, as cited in contemporaneous coverage of the ruling.

The decision was a double defeat. Patterson had asked the Court of Appeal to quash her convictions and order a retrial, arguing that she had suffered a substantial miscarriage of justice at her trial. The court rejected that challenge. At the same time, it upheld an appeal by prosecutors against the leniency of her sentence. The Director of Public Prosecutions, Brendan Kissane KC, had argued that the only substantial mistake in the original sentence was the inclusion of a non-parole period at all.

Patterson, 52, was convicted in July 2025 of murdering Don and Gail Patterson, the parents of her estranged husband, and Heather Wilkinson, Gail’s sister, after serving them beef Wellington containing death cap mushrooms at her home in Leongatha, in rural Victoria, in July 2023. She was also convicted of the attempted murder of Heather’s husband, Ian Wilkinson, a local pastor, who survived after weeks in hospital. She has consistently maintained that the poisonings were an accident, a position the jury rejected.

When she was sentenced in September 2025, Justice Christopher Beale imposed three life sentences for the murders and 25 years for the attempted murder, with a non-parole period of 33 years. That period meant she would have been in her 80s before she could have applied for release, according to CNN. The Court of Appeal has now removed even that distant prospect.

The judges who decided the appeal were Justices Stephen McLeish, Lesley Taylor and Peter Kidd. They found that Patterson’s intent to murder had been sustained for nearly three weeks, from the time she invited her guests to lunch, the Australian Associated Press reported. Her conduct, they said, involved an “elaborate series of deceptions” and was carefully planned and deliberate. The murders, the court found, represented “a cruel breach of trust”.

Delivering the court’s reasoning, Justice McLeish pointed to a pattern of deception that ran through the case, according to the Times. He cited what he described as false cancer claims deployed to explain the absence of Patterson’s children from the lunch, false denials that she had foraged for mushrooms, repeated false assertions about the source of the mushrooms, and the destruction of evidence. “Throughout the protracted suffering and ultimate deaths that resulted, the applicant’s conduct was characterised by an elaborate series of deceptions,” he said, according to the Times.

Patterson now has 28 days to decide whether to seek special leave to appeal to the High Court of Australia, the Times reported. The Associated Press described the High Court as her last appeal option. A further appeal would not be automatic: she would need the High Court’s permission to be heard, and the court would have to be persuaded that her case raised a question of sufficient importance or legal significance.

The ruling brings the most closely followed criminal case in recent Australian history to a decisive, if not necessarily final, point. The deaths in 2023 attracted extraordinary global attention, the Associated Press noted, and the case has since been examined in books, podcasts, documentaries and dramatised screen adaptations. Friday’s judgment, however, was not about that attention. It was about two narrower questions that appellate courts are asked to answer every day: whether the trial was fair, and whether the punishment fitted the crime. On both, the Court of Appeal answered against Patterson.

The appeal against conviction

Patterson’s lawyers presented seven grounds of appeal, according to coverage of the August hearing. The Court of Appeal granted leave to appeal on the first two grounds but dismissed the appeal on both, and rejected the other five, according to the Guardian’s account as reported contemporaneously. The distinction matters, because it means the court was willing to hear the two strongest arguments in full and still found that neither undermined the convictions.

The first ground concerned the way the jury had been sequestered during its deliberations. Patterson’s barrister, Richard Edney, described as “catastrophic” the decision to house jurors in the same hotel as the lead detective and members of the prosecution team while they were deliberating, the Australian Associated Press reported. The defence argued that the arrangement was an unexplained failure of process. Although there was no evidence that jurors had interacted with the prosecution team or witnesses, the defence said the possibility of interaction “cannot be excluded”, according to CNN.

The Court of Appeal did not accept that the arrangement, on its own, made the trial unfair. The judges found that “there was no objective basis for a fair-minded person to reasonably apprehend that the jury might not have discharged its function of rendering a verdict according to law”, CNN reported. In other words, the test was not whether a theoretical risk could be imagined, but whether a reasonable observer, looking at the facts objectively, would doubt that the jury had decided the case according to the law and the evidence. The court concluded that the test was not met.

The defence also argued that Patterson had effectively been forced to give evidence at her trial in order to show that she had always had an interest in foraging for mushrooms, that the prosecution’s cross-examination had been unfair and oppressive, and that the prosecution’s closing address had been problematic, according to the Australian Associated Press. A further complaint, reported in contemporaneous coverage, was that the trial judge had wrongly excluded photographs and videos of mushrooms found on an SD card at Patterson’s home, material the defence said supported her account of foraging.

The judges also rejected suggestions that some evidence should not have been admitted, CNN reported. That included mobile phone data that placed Patterson near the location of death cap mushrooms that had been posted to a citizen scientist website. The court found that the evidence was admissible as part of the prosecution’s wider circumstantial case. The point is an important one for understanding how the trial was won and lost: the prosecution did not rely on a single piece of direct evidence, such as a confession or an eyewitness to the preparation of the meal. It built its case from a pattern of conduct, communications, movements and statements, and asked the jury to draw inferences from the whole picture. The Court of Appeal’s ruling leaves that approach intact.

Prosecutors, led by Mr Kissane, defended the convictions while simultaneously arguing that the sentence was too lenient, according to the Australian Associated Press. That dual position is not unusual in an appeal of this kind, where the prosecution and the defence may each challenge a different part of the same outcome, but it underlined how far apart the two sides were on what justice required. For the defence, the trial itself was said to be flawed. For the prosecution, the trial was sound and the punishment was the only part that needed correction, in the direction of greater severity.

The appeal against sentence

The sentence appeal turned on a question that sounds technical but carries enormous human weight: whether a person sentenced to life imprisonment should ever be given a non-parole period, and therefore a date, however distant, on which release becomes legally possible.

A non-parole period does not guarantee release. It sets the earliest point at which a prisoner can apply for parole, and any application would still have to be considered on its merits, including risk, behaviour and the views of victims. But it does preserve a legal horizon. Removing it, as the Court of Appeal has done, means that Patterson has no such horizon. She will remain in prison for the remainder of her life unless a further appeal succeeds.

The prosecution argued that a 33-year non-parole period was manifestly inadequate for offending of this gravity. Mr Kissane argued that the extent of Patterson’s planning, her family ties to the victims and her lack of remorse meant she did not deserve a chance of freedom, according to the Times. The court agreed that the original sentence did not reflect the seriousness of the crimes, and it set the non-parole period aside without fixing another.

Justice McLeish’s language was unusually blunt for an appellate judgment. The offending was “extraordinarily cold and calculated”, he said, and the case involved “such shocking criminality” that fixing a non-parole period would be inappropriate. The court also found that the murders were “carefully planned and deliberate”, according to CNN, and that Patterson’s murderous intent had persisted from the invitations to the lunch through the administration of the poison and beyond, as the Australian Associated Press reported the court’s findings.

That emphasis on duration matters. The court was not describing a single impulsive act, or a mistake made in a moment of panic. It was describing a course of conduct sustained over weeks: invitations issued, a meal prepared, guests who trusted the host seated at her table, and then, as the guests fell gravely ill, a series of statements and actions that the court treated as deceptions. The sentence appeal succeeded because the court accepted the prosecution’s argument that this sustained, deliberate character made the original sentence too light, not because it reweighed the evidence of guilt.

Patterson appeared from the Dame Phyllis Frost Centre, Victoria’s main maximum-security prison for women, according to the Times. The Associated Press reported that, because of her notoriety, she is held in the high-security Gordon Unit of that prison, a unit for prisoners assessed as being at high risk from other inmates. She opted not to attend court in person and watched the verdicts by video link, the Associated Press said.

Ian Wilkinson, the sole survivor of the lunch, was not in court for Friday’s decision, according to the Australian Associated Press and the Times. The case’s lead detective, Stephen Eppingstall, was present but declined to comment to the media afterwards, the Australian Associated Press reported. Outside the court, the Australian Broadcasting Corporation reported that prosecutors, police investigators and supporters of Patterson’s former husband “grinned broadly”, according to CNN. Mr Wilkinson had previously forgiven Patterson while giving his victim impact statement at her sentencing last year, the Times reported, a gesture that has been widely noted in coverage of the case and that stands in marked contrast to the severity of the court’s language about her conduct.

What happened at the lunch

The facts found by the jury begin with an invitation. In July 2023, Patterson invited four relatives to lunch at her home in Leongatha, a town in south-east Victoria. The guests were Don and Gail Patterson, both 70, Heather Wilkinson, 66, and Heather’s husband, Ian Wilkinson, 71. Patterson served beef Wellington, a dish of beef fillet wrapped in pastry, with mushrooms. Within hours of the meal, the guests experienced severe stomach pains, CNN reported, and within days three of the four were dead. Ian Wilkinson survived after weeks in hospital.

Patterson does not deny cooking the meal that killed most of her lunch guests, CNN reported, but she claimed that she had accidentally laced it with death cap mushrooms while trying to improve its flavour. The jury found instead that she had picked the mushrooms for the purposes of murder, drying them in a food dehydrator that she dumped a few days after the meal, while her guests lay dying in hospital, according to CNN.

The trial that followed was held in Morwell, a small town in Victoria, and lasted for months in 2025. The jury heard from more than 50 prosecution witnesses before Patterson entered the witness box for eight days, the Australian Associated Press reported. The prosecution and defence then spent a week delivering their closing arguments before Justice Beale gave his directions to the jury. After six days of deliberations, the jury returned four guilty verdicts: three counts of murder and one count of attempted murder.

Patterson had been arrested by homicide detectives at her home on 2 November 2023, according to the Australian Associated Press, and by the time of Friday’s appeal decision she had served just under three years in custody. The long gap between arrest and trial, and the even longer shadow cast by the lunch itself, helps explain why the case has remained in public discussion for so long. For the families of the victims, the legal process has unfolded over more than three years. For the wider public, it has been a story told and retold in real time, in court reporting, in podcasts and in dramatisations, long before the appeals were decided.

Death cap mushrooms, known scientifically as Amanita phalloides, are among the most poisonous mushrooms in the world, and they resemble edible species closely enough to deceive even experienced foragers. That resemblance is part of why the case has resonated beyond the courtroom. Foraging has grown in popularity in many countries, and the line between a prized edible fungus and a lethal lookalike can be vanishingly thin. The Patterson case did not turn on foraging advice, and the court did not suggest that foraging itself is criminal. But the trial evidence about mushrooms, identification, drying and disposal ensured that the case became, for many readers, a cautionary tale as well as a criminal trial.

Analysis: Why It Matters

1. A double defeat that closes the ordinary appeal road

Friday’s ruling is significant first because of what it closes. Patterson challenged both her convictions and, indirectly, the framework of her punishment, and she lost on both fronts. The convictions stand. The sentence is harsher. The only remaining route, an application for special leave to the High Court, is discretionary and narrow. The High Court does not re-hear a trial or reweigh evidence as a matter of course. It intervenes where a case raises a question of law of public importance, or where the interests of justice otherwise require it. That is a high bar, and Patterson’s lawyers will have to show, within 28 days, that her case clears it.

That does not mean the case is over in every sense. High Court applications in high-profile cases attract close scrutiny, and the court may take time to consider whether to grant leave. But the practical effect of Friday’s decision is that the ordinary appeal process has now run its course, and the burden has shifted decisively. It is no longer for the prosecution to justify the convictions. It is for Patterson to persuade the country’s highest court that there is a reason to look again. For the victims’ families, that shift may bring a measure of finality, even if the legal door is not yet fully shut.

2. Why the sentence appeal mattered as much as the conviction appeal

Public attention naturally focused on whether Patterson’s convictions would survive. But the prosecution’s appeal against sentence may prove the more consequential part of the judgment for the criminal law. By setting aside a 33-year non-parole period and fixing none in its place, the Court of Appeal has said that some offending is so grave, and so deliberately sustained, that the law should not hold out even a distant prospect of release.

That is a strong statement, and it rests on the particular facts of this case rather than on a general rule. The court emphasised planning, deception, breach of trust and the protracted suffering of the victims. It did not say that every triple murder should attract life without parole. It said that this one, on these facts, should. The distinction is important, because it preserves the court’s discretion in future cases while signalling that the most calculated killings, carried out against people who trusted the killer, will be treated at the very top of the sentencing range.

The ruling also illustrates a feature of Australian sentencing that can surprise observers elsewhere: a life sentence and a non-parole period are separate decisions. A judge can impose life imprisonment and still fix a date after which parole can be sought. Removing that date does not add years to a sentence that already had no end. It removes hope, in the legal sense, and it does so deliberately, as an expression of denunciation. The court’s language — “denounced in the strongest terms”, “shocking criminality” — makes clear that denunciation, as well as punishment and protection of the public, was at the heart of the decision.

3. The jury-hotel argument, and why appellate courts rarely disturb verdicts on it

The defence’s strongest ground, on its face, was the jury sequestration argument. Jurors deciding a murder trial should be insulated from influence, and housing them in the same hotel as the prosecution team and the lead detective, even at different times, looks untidy at best. The defence called it catastrophic. The Court of Appeal, however, applied the test that appellate courts apply to questions of apprehended bias: would a fair-minded observer, knowing the facts, reasonably think the jury might not have decided the case according to law?

That test is deliberately demanding. Courts recognise that trials are human processes, conducted in real buildings, in real towns, where complete separation is not always possible. The question is not whether a better arrangement could have been made, but whether the arrangement that was made created a real risk of unfairness. The court found no objective basis for that conclusion, noting that there was no evidence of interaction between jurors and the prosecution team. The ruling will disappoint those who think the appearance of justice requires more than the absence of proven contact, but it is consistent with a long line of appellate decisions that refuse to overturn verdicts on speculation alone.

The same reasoning explains the court’s approach to the evidence complaints. Appellate courts are reluctant to second-guess a trial judge’s decisions about admissibility unless those decisions were plainly wrong and affected the outcome. The mobile phone data, the SD card material and the cross-examination were all matters for the trial judge to manage in the context of a long and complex trial. The Court of Appeal’s conclusion, in substance, was that none of the complaints, individually or together, showed that Patterson had been denied a fair trial. That is a high threshold, and it is one that most conviction appeals fail to meet.

4. Deception as the through-line of the judgment

If one theme runs through Friday’s judgment, it is deception. The court returned repeatedly to the idea that Patterson’s conduct was characterised by an elaborate series of deceptions, from the invitations to the lunch, through the meal itself, to the statements made afterwards about foraging, the source of the mushrooms and the fate of the dehydrator. The false cancer claims, cited by Justice McLeish, were said to have been used to explain why Patterson’s children were absent from the lunch. The false denials of foraging and the false assertions about the mushrooms’ source were said to have misled investigators and the guests’ families at a time when the truth mattered most.

Deception matters in sentencing for a specific reason. It is not merely an aggravating detail. It is evidence of planning, of consciousness of guilt and of a willingness to manipulate the trust of others. A person who makes a terrible mistake and then tells the truth is treated differently, in law and in ordinary moral judgment, from a person who makes a deliberate choice and then constructs a false account to conceal it. The Court of Appeal treated Patterson as firmly in the second category. Its finding that her murderous intent was sustained for nearly three weeks, and that her conduct after the lunch compounded the harm, explains why it was prepared to impose the most severe sentence the law allows.

That finding also helps explain the court’s emphasis on breach of trust. Don and Gail Patterson and Heather and Ian Wilkinson did not encounter a stranger. They accepted an invitation from a relative, sat at her table and ate food she had prepared. The law treats violence within relationships of trust as particularly serious, not because strangers matter less, but because trust is what makes family life, and social life more generally, possible. To exploit it in order to kill is, in the court’s words, cruel. The sentence reflects that cruelty, not only the number of lives lost.

5. A case that changed how Australia talks about foraging, fame and trust

Beyond the courtroom, the Patterson case has already changed public conversation in Australia, and Friday’s ruling is likely to intensify it. The case arrived at a moment when foraging, wild-food cooking and citizen science were all growing in popularity, and it forced a difficult discussion about risk. Death cap mushrooms are not rare, and they are not obviously sinister in appearance. They grow in woodland and parkland, they look unremarkable, and they can be mistaken for edible species by people who believe they know what they are doing. The trial did not establish that foraging is inherently dangerous, and nothing in the judgment suggests that it is. But the case has become a reference point in every subsequent discussion of mushroom identification, and it is likely to remain one.

The case has also become a reference point in discussions about true crime and its limits. Books, podcasts, documentaries and dramatised versions were announced or released while the legal process was still under way, and the sheer volume of coverage raised questions about the effect of publicity on a fair trial. The Court of Appeal’s ruling does not answer those questions, and it was not asked to. But the fact that the convictions survived, despite the intensity of coverage, will be cited by those who argue that Australian courts are capable of insulating juries from the surrounding noise. Others will continue to argue that the system should do more to manage publicity in the first place. Both arguments will outlive this judgment.

Finally, the case has tested public understanding of the criminal law itself. Many people assume that a life sentence means life without release, or that an appeal is a retrial. Neither assumption is quite right. A life sentence can carry a non-parole period. An appeal is a review for legal error, not a second trial. Friday’s decision has clarified both points in the starkest possible way: Patterson’s life sentence now means what most people thought it meant all along, and her appeal has confirmed, rather than overturned, the verdicts of the jury. For a public that has followed the case in extraordinary detail, that clarity may be the judgment’s most lasting contribution.

What to Watch Next

1. The High Court decision. Patterson has 28 days to seek special leave to appeal to the High Court of Australia. Watch for whether an application is filed, what grounds it advances, and whether the High Court grants leave. A refusal would bring the legal process to an end. A grant would reopen the case on the specific questions the court identifies, not on the whole trial.
2. The full written reasons. The judgment was delivered in a short hearing, and the detailed written reasons of the three judges will repay close reading when they are available in full. They are likely to explain, in greater depth, why the jury-sequestration and evidence arguments failed, and why the court concluded that no non-parole period should be fixed. Those reasons will shape how future sentence appeals are argued.
3. Responses from the prosecution and the victims’ families. The lead detective declined to comment after Friday’s decision, and Ian Wilkinson was not in court. Watch for any statements from the Director of Public Prosecutions, Victoria Police or the families, and for how they frame a judgment that is both a vindication of the original verdicts and a significant hardening of the sentence.
4. Prison and classification. Patterson is held in a high-security unit because of the risk she is assessed to face from other prisoners. Watch for any change in her classification or conditions following a sentence of life without parole, and for whether the prison system publishes any further information about her placement. Such details are rarely disclosed in full, and should not be speculated about.
5. Public debate on foraging and true crime. The case is already the subject of books, podcasts and screen adaptations. Watch for whether Friday’s ruling prompts renewed guidance from mycological and food-safety bodies on mushroom identification, and whether it prompts a broader discussion in Australia about the ethics and timing of dramatising cases while appeals are still pending.

Sources

• Reuters — “Australian mushroom murderer Erin Patterson loses appeal bid”
• Associated Press (via Reflector) — “Australian court orders Erin Patterson never to be released from prison for mushroom poisonings”
• CNN — “Mushroom killer to be jailed for life after appeals court finds sentence too light”
• Australian Associated Press — “Life without parole for mushroom killer as appeal fails”
• The Times — “Mushroom killer loses appeal as harsher sentence imposed”