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Australian Court Increases Mushroom Poisoner’s Sentence to Life Without Parole

An Australian appeals court increased Erin Patterson’s sentence to life without parole for the 2023 death cap mushroom poisonings of three relatives.

Background: How the Supreme Court takes a case

Published October 30, 2026 at 8:36 AM EDT

The short answer

An Australian appeals court increased Erin Patterson’s sentence to life without parole for the 2023 death cap mushroom poisonings of three relatives. The Victoria state Court of Appeal on Friday ordered Erin Patterson to serve a life sentence without the possibility of parole for the mushroom poisoning deaths of three people.

Australian Court Increases Mushroom Poisoner’s Sentence to Life Without Parole

The Facts

Who
Erin Patterson and the Victoria state Court of Appeal judges
What
The Victoria state Court of Appeal dismissed Erin Patterson's appeal and increased her sentence to life imprisonment without the possibility of parole.
When
Friday
Where
Melbourne, Australia
Why
The court ruled that the original 33-year nonparole sentence was too lenient for what it described as "shocking criminality" and "calculated" murders.

The Victoria state Court of Appeal on Friday ordered Erin Patterson to serve a life sentence without the possibility of parole for the mushroom poisoning deaths of three people. The three-judge panel dismissed Patterson’s appeal of her murder convictions and granted a challenge by prosecutors who argued her original 33-year nonparole period was too lenient. Under the previous sentence, Patterson would have been eligible for release at age 82.

The case stems from a July 2023 lunch at Patterson’s home in Leongatha, where she served a beef Wellington dish containing death cap mushrooms. The meal resulted in the deaths of her parents-in-law, Don and Gail Patterson, and Gail’s sister, Heather Wilkinson. A fourth guest, Baptist pastor Ian Wilkinson, survived after being hospitalized for several weeks. Patterson has maintained that she added the toxic mushrooms to the dish by accident.

Justice Stephen McLeish, writing for the court, described the actions as "extraordinarily cold and calculated." The court found that Patterson's intent was sustained for nearly three weeks, from the time she issued the lunch invitations. The judges noted that Patterson engaged in an "elaborate series of deceptions," including a false claim of a cancer diagnosis to explain why her children were not present at the meal. The court also cited the destruction of evidence and false statements regarding the source of the mushrooms as factors in the increased sentence.

The scale of the impact is concentrated on the victims' families and the high-security prison system in Victoria. Patterson is currently held in the Gordon Unit of the Dame Phyllis Frost Centre, a section for inmates at risk from other prisoners. Trial judge Christopher Bale previously stated there is a "substantial chance" she will remain in solitary confinement for years. For the survivor, Ian Wilkinson, and the families of the three deceased, the ruling provides a legal determination on the duration of the punishment following a case that drew global media attention and inspired media adaptations.

The ruling sets a rare precedent in Australian law, as life-without-parole sentences are reserved for what the court termed "shocking criminality." While the appeals court has delivered its verdict, Patterson retains one final legal avenue. She may apply to the High Court of Australia to request an overturn of both her convictions and the new sentence. It is not yet reported if or when her legal team will file this application.

Timeline of what happened

Key dates and decisions, in the order they occurred.

  1. July 2023

    Patterson hosts family lunch in Leongatha

  2. June 4, 2025

    Ian Wilkinson testifies at pretrial hearing

  3. August 25, 2025

    Patterson arrives at Supreme Court of Victoria for appeal proceedings

  4. September 2025

    Patterson sentenced to life with 33-year nonparole period

Summaries are written by The Plain Record to state the facts of a story plainly and without political slant. Drafted with AI assistance and checked against the source record before publication. See how we report, or report a correction.

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Questions readers ask

What happened: Australian Court Increases Mushroom Poisoner’s Sentence to Life Without Parole?

The Victoria state Court of Appeal dismissed Erin Patterson's appeal and increased her sentence to life imprisonment without the possibility of parole.

Who is involved?

Erin Patterson and the Victoria state Court of Appeal judges

When did this happen?

Friday

Where did this happen?

Melbourne, Australia

Why does this matter?

The court ruled that the original 33-year nonparole sentence was too lenient for what it described as "shocking criminality" and "calculated" murders.