After a highly publicized nine-week trial, Erin Patterson, a 50-year-old mother of two from Leongatha, Australia, has been found guilty of three counts of murder and one count of attempted murder for serving a fatal meal of poisonous mushrooms to her estranged husband’s family. The verdict follows nearly two years of investigation and intense national scrutiny into a case that began with a home-cooked lunch and ended in tragedy.

Patterson now faces a potential sentence of life in prison. Her sentencing will be determined at a later date.

The case centers around a July 2023 lunch that Patterson hosted for her estranged husband Simon’s family—his parents, Gail and Donald Patterson, both 70; his aunt Heather Wilkinson, 66; and her husband, Ian Wilkinson, 68. Simon Patterson had initially planned to attend the meal but backed out at the last minute. The four guests were each served individual portions of homemade beef Wellington, a traditional dish typically made with mushroom paste.

Within 24 hours, all four were hospitalized with severe gastrointestinal symptoms. Three of the four—Gail, Donald, and Heather—died within the week due to organ failure caused by Amanita phalloides, commonly known as death cap mushrooms. Ian Wilkinson was the lone survivor. After spending weeks in intensive care he was available to testify at the trial.

The central question facing the jury was whether Erin Patterson knowingly poisoned her guests. Prosecutors argued that Patterson intentionally prepared the meal with foraged death cap mushrooms, citing digital evidence, witness testimony, and Patterson’s changing story in the aftermath of the deaths.

Photos recovered from Patterson’s phone showed wild mushrooms being weighed and dehydrated on a tray in her kitchen. Despite initially telling police she hadn’t foraged for mushrooms or owned a food dehydrator, Patterson later admitted to both. She also acknowledged throwing away the dehydrator shortly after the meal, a move she described on the stand as a “stupid, knee-jerk reaction.”

Prosecutors also accused Patterson of fabricating a cancer diagnosis to lure her guests to the lunch. She later admitted on the stand that she had no medical condition and was instead considering weight-loss surgery. “I was too embarrassed to tell the truth,” she said. That fabricated story, they argued, was one of four “calculated deceptions” Patterson used to carry out and conceal her actions.

She denied any intent to harm her guests, saying the mushrooms were accidentally included from a mix of dried and fresh ingredients, and that she panicked after the deaths. Her defense team argued that she had no motive—citing a positive relationship with her in-laws and stable personal circumstances—and suggested that her many inconsistencies were due to fear, not guilt.

But the jury was not convinced. The fact that Patterson made herself a separate plate of food—on a different-sized, differently colored dish—raised further suspicion. Both Ian Wilkinson and his late wife reportedly noticed the discrepancy and mentioned it to Simon Patterson the next day, before the poisoning was known.

During the trial, prosecutors focused on Patterson’s actions in the days and weeks following the lunch in question. They note that while her guests were criticially ill in the hospitals she never spoke with their doctors about the possibility of death cap mushrooms. Her omission led to a deadly delay in diagnosis and treatment that could have saved their lives.

While Patterson’s lawyers insisted that she showed poor judgment in a moment of fear, prosecutors said she exhibited deliberate behavior to conceal the truth—from resetting her phone during the investigation to giving shifting explanations for her own symptoms. Medical records and expert testimony suggested that she had not experienced the same level of illness as the others, casting doubt on her claim that she had also been poisoned.

Prosecutor Nanette Rogers argued in her closing statement that Patterson took extensive steps to plan the meal and avoid poisoning herself, saying, “She had complete control over the ingredients that went into the lunch.”

While the prosecution was never able to pin down a specific motive, Rogers said to the jurors, “You don’t have to know why a person does something to know they did it.”

Ultimately, the jury agreed.

Patterson’s case captivated Australia, both for its shocking circumstances and for the murky legal and emotional questions it raised. Did Patterson’s lies point to a guilty conscience—or a terrified woman caught in an unimaginable situation? Was this a tragic accident or premeditated murder?

For the victims’ families, the verdict offers some closure. For Patterson, a long sentencing process awaits. And for the wider public, the case serves as a grim reminder of how something as seemingly ordinary as a home-cooked meal can carry fatal consequences.