‘Mushroom Killer’ Erin Patterson Jailed for Life Over Deadly Lunch

Patterson showed little reaction as she was sentenced to life imprisonment.

Convicted murderer Erin Patterson is escorted out of the Supreme Court of Victoria following the day's proceedings in a pre-sentencing hearing in Melbourne, Australia, on Aug. 25, 2025. Martin Keep/AFP via Getty Images

Erin Patterson, dubbed Australia’s “mushroom killer,” has been sentenced to life in prison for murdering three family members with a meal laced with poisonous fungi.

She will remain behind bars for at least 33 years before becoming eligible for parole.

The 50-year-old sat in silence as Victorian Supreme Court Justice Christopher Beale delivered his decision on Sept. 8.

Patterson, who had her eyes closed for much of the sentencing, showed little reaction as her crimes were laid out in court.

Deadly Beef Wellington Lunch

In July 2023, Patterson served beef Wellingtons stuffed with death cap mushrooms to her former in-laws, Don and Gail Patterson, both 70, and Gail’s sister Heather Wilkinson, 66.

All three died within days of the meal. Heather’s husband, Ian Wilkinson, survived after spending weeks in hospital and undergoing a liver transplant.

Patterson maintained the tragedy was an accident.

But a jury in July found her guilty of three counts of murder and one count of attempted murder, rejecting her claims that she did not intend harm. Prosecutors highlighted the deliberate preparation of the meal and Patterson’s shifting explanations during the investigation.

Her estranged husband, Simon Patterson, had also been invited to lunch but declined to attend. He later told investigators he believed his wife suffered from anxiety and possible autism spectrum conditions.

Prosecution and Defence Clash on Parole

During a pre-sentence hearing in August, Erin Patterson’s barrister, Colin Mandy SC, argued she should be granted a non-parole period, citing the “deprived” conditions she faced in custody. Colin argued she had been diagnosed with Asperger’s syndrome, though Justice Beale said the evidence carried little credibility.

Crown prosecutor Jane Warren took a much harder line, urging the court to deny Patterson any chance of release. She described the murders as “so cruel and horrific” that Patterson did not deserve mercy.

Warren compared the case to the 2017 sentencing of Michael Cardamone, who was jailed for life without parole for burning his neighbour alive.

Beale ultimately set a minimum term of 33 years before parole eligibility. Patterson now has a month to lodge an appeal against her conviction and sentence.

Family Devastated

The mushroom poisoning case gripped the nation, sparking debate about food safety, family violence, and the dangers of toxic fungi. Death cap mushrooms are among the deadliest in the world, with even tiny amounts capable of causing fatal liver failure.

Lone Survivor Wilkinson described his wife as a woman who took her faith seriously and was full of love, kindness and self-control.

“I only feel half alive without her,” Wilkinson said before weeping.

Ian Wilkinson, the only guest to survive the toxic mushroom lunch with Australian murderer Erin Patterson, speaks to members of the media outside the Supreme Court of Victoria in Melbourne, Australia, on Sept. 8, 2025. Martin Keep/AFP via Getty Images

“It’s one of the distressing shortcomings of our society that so much attention is showered on those who do evil and so little on those who do good,” he added.

He described Gail and Don Patterson, the parents of Erin Patterson’s estranged husband Simon Patterson, as the closest people to him after his wife and family.

“My life is greatly impoverished without them,” Wilkinson said.

AAP contributed to this article.