Australian woman guilty of triple murder involving poisonous mushrooms

Australia is known for its surfers, cute koalas and barbecues with thick steaks. But lately, all attention has turned to a very unpleasant lunch in Leongatha (Victoria). This is where fifty-year-old Erin Patterson served her in-laws a classic beef Wellington, but with a surprise no one would wish for: poisonous mushrooms. The result? Three deaths and a court case even Netflix would be jealous of.

Poisonous mushrooms in the starring role
According to the court, it was no stupid mistake: this week, Erin Patterson was found guilty of three murders and one attempted murder. The murder weapon? Not a knife or a gun, but a serving of death cap mushrooms, also known as every mycologist’s nightmare.
The victims were her former in-laws Don and Gail Patterson, as well as Gail’s sister Heather. Only Ian Wilkinson, Heather’s husband, survived the illustrious dinner.
Falling ill after twelve hours
The lunch began with an excuse. Patterson had invited her in-laws under the pretext of an important family meeting about medical news. She supposedly had ovarian cancer. Spoiler alert: that turned out to be a lie too.
Twelve hours after the meal, the guests began to fall seriously ill. At the hospital, it soon became clear that they had suffered mushroom poisoning. Don, Gail and Heather died several days later.
But she wasn’t ill?
What makes it even more suspicious: Erin herself had no symptoms at all. She even insisted on simply going home after a medical check-up. While her guests lay seriously ill in intensive care, she maintained that it was all an unfortunate coincidence.
And then things got even darker: she gave leftovers from the meal to her children. But, she claimed, she had “removed the mushrooms”.
A plate with a different colour
Victim Heather had previously told someone that Erin had a different-coloured plate from the others. Coincidence? Maybe. But in a case where everything is suspicious, nothing goes unnoticed.
During the trial, even more lies came to light. Patterson initially said that she had bought the mushrooms at an Asian supermarket. Later, she admitted that she had picked them herself, in a place known for growing poisonous specimens.
No remorse, just silence
The woman herself remained remarkably quiet during the verdict. She listened to the judgment in silence and did not shed a tear. It is not yet known whether she will appeal. But with a possible life sentence looming, it would be understandable.
Just this: how poisonous are those mushrooms, actually?
Death cap (Amanita phalloides) is responsible for 90% of all fatal mushroom poisonings worldwide. Just one cap can be fatal to an adult. Symptoms only begin after 6–12 hours, by which time your liver is already in serious trouble. Want to be on the safe side? Just don’t pick them.
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