Australian woman found guilty of triple murder involving poisonous mushrooms

Australia is known for its surfers, adorable koalas and barbecues with thick steaks. But lately, all the attention has been focused on a very unpleasant lunch in Leongatha (Victoria). There, fifty-year-old Erin Patterson served her in-laws a classic beef Wellington—but with a surprise nobody would wish for: poisonous mushrooms. The result? Three deaths and a trial that even Netflix would be jealous of.

Poisonous mushrooms in the leading role
According to the court, it was not a stupid mistake: this week, Erin Patterson was found guilty of three murders and one attempted murder. The murder weapon? Not a knife or gun, but a serving of death cap mushrooms, also known as every mycologist’s nightmare.
The victims were her former parents-in-law, Don and Gail Patterson, plus Gail’s sister Heather. Only Ian Wilkinson, Heather’s husband, survived the infamous 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 claimed to have ovarian cancer. Spoiler alert: that turned out to be a lie too.
Twelve hours after the meal, the guests began to become seriously ill. At the hospital, it quickly 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 everything was an unfortunate coincidence.
And then it gets truly dark: she gave her children leftovers from the meal. But, she claimed, she had “removed the mushrooms”.
A plate with a different color
Victim Heather had previously told someone that Erin had a different-colored plate from everyone else. Coincidence? Maybe. But in a case where everything is suspicious, nothing goes unnoticed.
More lies came to light during the trial. 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 to have poisonous varieties growing there.
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 ahead of her, 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 may already be in serious trouble. Want to play it safe? Simply don’t pick them.
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