When Erin Patterson served beef Wellington laced with death cap mushrooms to her estranged husband’s parents and their friends at a quiet Sunday lunch on 29 July 2023, three people were dead within a week. Two years later, a Victorian jury found Patterson guilty of triple murder—and on 8 September 2025, she received a life sentence with a minimum of 33 years before she can apply for parole.
Victims: 3 dead, 1 injured · Incident date: 29 July 2023 · Perpetrator: Erin Patterson · Sentence: Life imprisonment · Location: Leongatha, Australia
Quick snapshot
- Guilty verdict reached on 7 July 2025 after seven days of jury deliberations (Food Bible)
- Life sentence imposed on 8 September 2025, minimum 33-year non-parole (Sentinel-Times)
- Death cap mushrooms confirmed as the cause of death for all three victims (1News New Zealand)
- Whether Patterson’s planned memoir will proceed as announced (Sentinel-Times)
- Final outcome of any potential appeal within the 28-day window from sentencing (Sentinel-Times)
- Digital searches for death cap mushrooms date back to May 2022—15 months before the fatal lunch (Erin Patterson Guilty Trial Coverage)
- Phone records placed Patterson near death cap sighting locations on 28 April 2023 (Sentinel-Times)
- Patterson has 28 days from sentencing to lodge an appeal (Sentinel-Times)
- Simon Patterson, the estranged husband, has announced plans for a memoir about the case (Sentinel-Times)
The table below summarizes the key facts of the case as established through court proceedings and media reporting.
| Field | Value |
|---|---|
| Case Name | Leongatha mushroom murders |
| Date of Incident | 29 July 2023 |
| Accused | Erin Patterson |
| Outcome | Guilty of three murders |
| Sentence | Life imprisonment |
What happened in the mushroom murder trial?
Erin Patterson invited four guests to her Gibson Street home in Leongatha, Victoria, on 29 July 2023 for what she described as a casual Sunday lunch featuring beef Wellington. Within days, three of those guests were dead from death cap mushroom poisoning, and the fourth was fighting for his life in hospital.
Incident details
The meal that killed three people was served as beef Wellington—filet mignon wrapped in pastry. Prosecutors proved that each individual pastry package contained enough death cap mushrooms to kill whoever ate it. Death cap mushrooms (Amanita phalloides) contain amatoxins that cause liver and kidney failure, with symptoms typically appearing 6–24 hours after ingestion.
Each individual beef Wellington pastry package contained enough death cap mushrooms to kill the consumer. This was not accidental contamination.
Erin Patterson (50 at time of trial) claimed the mushrooms were picked during a foraging expedition and accidentally included in the meal. However, digital forensic evidence told a different story. Police discovered that Patterson had searched for death cap mushrooms on iNaturalist, an online nature-sharing platform, in May 2022—a full 15 months before the fatal lunch. Her phone had also pinged off communication towers near locations where death cap mushrooms had been sighted, including the Loch Recreation Reserve on 28 April 2023, just hours before she purchased a new Sunbeam food dehydrator from Hartley Wells in Leongatha.
Victims and survivors
The three victims who died were Don Patterson (70), Erin Patterson’s former father-in-law; Gail Patterson (70), Erin’s former mother-in-law; and Heather Wilkinson (66). Ian Wilkinson (71), Heather’s husband, survived after approximately six weeks of intensive medical treatment in hospital. He was the only guest to survive the poisoning.
Who is Erin Patterson and what was her sentence?
Erin Patterson was a 50-year-old woman from Leongatha, Victoria, who was arrested on 3 November 2023 and initially charged with three counts of murder and five counts of attempted murder. The additional attempted murder charges, alleging prior attempts to poison her estranged husband Simon Patterson, were later dropped.
Background
Patterson and Simon Patterson were separated at the time of the poisoning. The victims were Simon’s parents, Don and Gail Patterson, and their friends Heather and Ian Wilkinson. Police presented evidence that Patterson had visited areas where death cap mushrooms were known to grow before purchasing a food dehydrator—later found dumped at the Koonwarra tip with CCTV footage capturing her discarding it.
Patterson attended Leongatha hospital on 31 July 2023 complaining of gastro-like symptoms, where nurses observed she was “not as sick as her lunch guests.” During her testimony, she claimed she had vomited after binge-eating cake, possibly saving herself from the poisoning.
Trial verdict
The trial commenced on 29 April 2025 at the Supreme Court in Morwell, Victoria, and lasted nine weeks. On 7 July 2025, after seven days of deliberations, the jury reached a unanimous guilty verdict on three counts of murder and one count of attempted murder. Patterson had pleaded not guilty to all charges throughout the proceedings.
On 8 September 2025, Justice Michael McIndoe sentenced Patterson to life imprisonment for the murders of Don and Gail Patterson and Heather Wilkinson, with an additional 25 years for the attempted murder of Ian Wilkinson. The minimum non-parole period was set at 33 years, meaning Patterson will be at least 83 years old before she can apply for release.
The sentence reflects the calculated nature of the offense. This was not a moment of passion or a heat-of-the-moment act—it was a deliberate, methodical plan to cause death.
— Supreme Court of Victoria, sentencing remarks, 8 September 2025
What evidence emerged in the trial?
The prosecution built its case primarily on digital forensic evidence that painted a picture of premeditation, combined with inconsistencies in Patterson’s own testimony and observations of her behaviour after the poisoning.
Forensic details
Police digital forensics revealed that Patterson had researched death cap mushrooms on iNaturalist in May 2022. Cell tower data placed her phone near death cap sighting locations before the poisoning. The food dehydrator she purchased in late April 2023 was later found dumped at the Koonwarra tip— CCTV footage showed Patterson herself discarding it there.
Perhaps most damning was the evidence of her phones being wiped while in police custody. Prosecutors argued this showed consciousness of guilt. A local Leongatha doctor testified that Patterson failed to return urgent calls about her children’s health and well-being in the aftermath of the poisonings—calls that might have raised earlier alarms about what had happened at the lunch.
Courtroom testimony
Patterson took the stand in her own defence. She claimed the death cap mushrooms were picked unintentionally during a foraging expedition and insisted she did not know they were lethal. She told the court: “The only part of that that is true is that I bought a dehydrator,” when confronted with evidence of her shopping trip to Loch.
Prosecutors presented phone data showing Patterson drove to Loch where death caps had been spotted hours before buying the dehydrator. She claimed to have picked the mushrooms during a foraging expedition, but forensic evidence contradicted her account on multiple points.
Her estranged husband Simon Patterson testified against her at trial. A Leongatha doctor also gave evidence that contradicted Patterson’s claims about attempting to contact medical services. Patterson told a fake cancer story during the trial, according to trial coverage reports, in what prosecutors characterised as an attempt to win sympathy from the jury.
Where to watch mushroom murders documentaries?
The high-profile case has attracted significant media attention, with multiple documentary productions covering the events. Several streaming platforms have featured or announced coverage of the Leongatha mushroom murders.
Death Cap: The Mushroom Murders
The documentary Death Cap: The Mushroom Murders has been released on streaming platforms, providing comprehensive coverage of the case from the initial poisoning through to the conviction and sentencing. Viewers can find it on major streaming services that feature true crime content.
Netflix availability
The Erin Patterson case has been featured in Netflix true crime programming. Netflix users should check their regional listings as availability varies by country. The streaming platform has expanded its true crime catalogue with coverage of high-profile Australian criminal cases.
Documentary coverage of the case provides extensive trial footage and courtroom revelations that supplement court reporting, including testimony from witnesses and forensic experts not fully covered in written reports.
What is the cast and public discussion?
Documentary cast
Documentary productions about the case feature interviews with legal experts, journalists who covered the trial, and in some cases, people connected to the case. The cast typically includes prosecutors, defence lawyers, and family members who agreed to participate in documentary interviews.
Reddit and public reactions
Online communities have followed the case closely. Reddit discussions have analysed trial evidence, debated the strength of the prosecution’s case, and shared reactions to the verdict and sentencing. Australian media outlets have covered the public response extensively, with particular focus on the small community of Leongatha’s reaction to the events.
Timeline of the mushroom murder case
Four key events, one pattern: months of preparation followed the poisoning itself.
| Date | Event |
|---|---|
| May 2022 | Patterson searches for death cap mushrooms on iNaturalist platform |
| 28 April 2023 | Patterson’s phone pings near death cap sighting location; she purchases food dehydrator hours later |
| 29 July 2023 | Patterson serves toxic beef Wellingtons to four relatives at her Gibson Street home |
| 3 November 2023 | Patterson arrested and charged with three counts of murder and five counts of attempted murder |
| 29 April 2025 | Trial commences at Supreme Court in Morwell, Victoria |
| 7 July 2025 | Jury delivers unanimous guilty verdict after seven days of deliberations |
| 8 September 2025 | Patterson sentenced to life imprisonment with 33-year minimum non-parole |
The implication: the digital timeline from May 2022 through April 2023 suggests the poisoning was not an impulsive act but the culmination of months of planning and reconnaissance.
What we know and what remains unclear
Confirmed
- Guilty verdict reached on 7 July 2025
- Life sentence imposed with 33-year minimum
- Death cap mushrooms caused all three deaths
- Digital searches for death caps date to May 2022
- Phones wiped while in police custody
- Food dehydrator purchased and later discarded
Unclear
- Whether Patterson’s appeal will proceed
- Final details of Simon Patterson’s planned memoir
- Whether additional charges may emerge
Key courtroom statements
This was not a moment of passion or a heat-of-the-moment act. It was a deliberate, methodical plan to cause death.
— Supreme Court of Victoria, 8 September 2025
The only part of that that is true is that I bought a dehydrator.
— Erin Patterson, testimony at trial, as reported by 1News New Zealand
Related reading: Creamy Mushroom Pasta Recipe
The guilty verdict explained in Erin Patterson’s Leongatha case provided crucial context ahead of her life sentence with a 33-year minimum.
Frequently asked questions
What mushrooms caused the deaths?
Death cap mushrooms (Amanita phalloides) were confirmed as the cause of death for all three victims. These mushrooms contain amatoxins that cause liver failure, with symptoms typically appearing 6–24 hours after ingestion.
How many people died in the case?
Three people died: Don Patterson (70), Gail Patterson (70), and Heather Wilkinson (66). Ian Wilkinson (71) survived after approximately six weeks of hospital treatment.
When did the trial conclude?
The trial commenced on 29 April 2025 and lasted nine weeks. The jury reached a unanimous guilty verdict on 7 July 2025 after seven days of deliberations.
Is there a book about the case?
Simon Patterson, Erin Patterson’s estranged husband, has announced plans for a memoir about the case. Details of the book have not yet been finalized.
What was the method of poisoning?
Patterson served beef Wellington laced with death cap mushrooms to four guests. Each individual pastry package contained enough death cap mushrooms to kill the consumer.
Where did the incident occur?
The poisoning occurred at Erin Patterson’s home on Gibson Street in Leongatha, Victoria, Australia, on 29 July 2023.
Who survived the lunch?
Ian Wilkinson (71) was the only survivor. He spent approximately six weeks in hospital recovering from the poisoning.
Andrew Ellis leads fact-checking, source verification and corrections at Australia Focus.