The Erin Patterson Appeal, Explained Simply
Erin Patterson was convicted of murdering three relatives by serving them a beef Wellington containing toxic mushrooms. She is now asking a higher court to overturn that conviction. Three appeal judges in the Supreme Court of Victoria, including Justice Peter Kidd, will hear the case. The hearings are scheduled for 19–20 August 2026 at 10:15am in Court 1, 210 William Street, Melbourne, and are being publicly livestreamed by the court (Supreme Court of Victoria).
An appeal is when someone who has been found guilty asks a higher court to review the trial for mistakes that could have changed the result. Patterson's team is arguing several things went wrong.
The most eye-catching issue involves where the jury stayed. During the trial, the people who served on the jury (the group of citizens who decide guilt or innocence) were put up in the same hotel as the prosecution team, a key police witness, and journalists. The Supreme Court of Victoria confirmed this happened (ABC News). Patterson's lawyer, Richard Edney, called the situation 'catastrophic' and said it undermined the verdicts, so the convictions should be thrown out and a new trial held (BBC News).
Victoria's top prosecutor, Brendan Kissane, agreed the hotel situation was regrettable but said it was an accident. He argued there is no evidence the jury spoke with anyone from the trial, and said steps were taken to keep the jury separate from trial participants at the hotel (ABC News).
Patterson's lawyers also challenged the evidence used against her. The prosecution had argued she found death cap mushrooms using a website called iNaturalist, where people share sightings of plants and fungi. But Patterson's lawyer Veronika Drago said mobile phone records only 'possibly' showed where Patterson had been, and there was no proof she ever looked at the iNaturalist posts (BBC News).
Crown prosecutor Jeremy McWilliams defended the use of a mobile phone tower expert, saying the jury could use that information to decide whether Patterson had a chance to find death cap mushrooms. Patterson's lawyers also argued that Facebook messages she sent months before the lunch, where she was critical of her estranged husband Simon and his parents Don and Gail Patterson, had nothing to do with the case and should not have been shown to the jury (BBC News).
The defense team also complained about how the prosecutors behaved. They said chief prosecutor Dr Nanette Rogers was aggressive and improper when questioning witnesses, and they listed 35 complaints about the prosecutors' closing speech to the jury (BBC News).
Prosecutors said in court documents that 'guilty verdicts were inescapable.' They are also appealing Patterson's sentence. Patterson can apply for parole (early release from prison under supervision) after 33 years. The prosecutors called that 'manifestly inadequate' and said the judge should not have set any fixed parole period at all (BBC News).
Prosecutors will continue arguing against Patterson's appeal on Thursday. The three appeal judges are expected to 'reserve their decision,' which means they will take time to think about it before giving a ruling. It could be many weeks before the outcome is known (BBC News).
The broader context here is that this appeal raises questions about the justice system itself. If the court agrees that putting jurors in the same hotel as prosecutors and witnesses was a serious problem, that could change how courts handle juries in major trials going forward. The dispute over the mushroom website and phone data also tests how courts should handle uncertain digital location information.
The prosecutors' own appeal against the sentence adds another layer. By challenging the parole period, the Crown is saying the punishment itself may have been too lenient, separate from whether the conviction should stand. With the judges taking their time to decide, a resolution is still a ways off.
