Erin Patterson, a 50-year-old woman from Victoria, Australia, has given her version of events in a trial over the deaths of three relatives of her estranged husband. The case involves the poisoning of her mother-in-law, father-in-law, and the mother-in-law’s sister in July 2023. Patterson is also charged with the attempted murder of the sister’s husband, who survived after eating the same meal.
Prosecutors say Patterson served a Beef Wellington containing deadly death cap mushrooms at her home in Leongatha, about 135 kilometers from Melbourne. The victims became seriously ill and three later died in hospital. The surviving victim required weeks of treatment. The prosecution claims Patterson knowingly gave the poisonous mushrooms to her guests, but she denies these charges.
During her testimony, Patterson broke down in court and said she may have accidentally included foraged mushrooms in the meal. She admitted that she sometimes mixes store-bought and wild mushrooms but did not check carefully before cooking. Her defense argues the deaths were a tragic accident.
Patterson also admitted she lied about having medical issues to maintain sympathy from her husband’s family. She said she feared losing their support and care, which she wanted to keep. The prosecution claims these lies were meant to lure the victims to her home, a claim Patterson denies.
The trial began on April 29, 2025, and is taking place in Morwell, about two hours east of Melbourne. It has drawn significant media attention, with many journalists and podcasters covering the case daily. The ABC’s podcast about the trial has become Australia’s most popular podcast, while newspapers provide live updates.
Death cap mushrooms, responsible for the poisoning, are highly toxic and common in parts of Australia. They are often mistaken for edible mushrooms but contain lethal toxins that cause organ failure hours after consumption. Medical experts warn against foraging wild mushrooms without expert knowledge.
The case has shocked the local community in Leongatha and the wider Gippsland region. Residents are struggling to understand the tragedy involving families they knew personally. Investigations have included testimony from medical, forensic, and mushroom experts.