MELBOURNE — Victoria’s Court of Appeal on Wednesday began hearing arguments in two separate appeals related to the 2023 death cap mushroom poisoning case of Erin Patterson. The 51-year-old was convicted last year of three counts of murder and one count of attempted murder for serving a poisoned beef Wellington to her estranged husband’s relatives during a lunch at her home in Leongatha. The appeals were lodged by both Patterson’s legal team and the state’s Director of Public Prosecutions (DPP), each challenging different aspects of the original trial and sentencing outcome.
Patterson’s appeal challenges jury sequestration and evidence admissibility
The defense’s primary argument centers on a ‘catastrophic’ breach of jury sequestration, where jurors deliberating the case were housed at the same hotel as members of the prosecution team, a key police witness, and journalists. Patterson’s barrister, Richard Edney, argued this arrangement undermined the integrity of the verdicts and required the convictions to be quashed, calling for a retrial to ensure justice was seen to be done. The defense also contested the admission of mobile phone tower evidence, which prosecutors used to suggest Patterson had the opportunity to forage for death cap mushrooms after sightings were reported on the citizen science platform iNaturalist. Defense lawyer Veronika Drago described this as ‘turning nothing into something’, asserting the evidence was speculative and unfairly prejudicial.
Prosecution appeals sentence as ‘manifestly inadequate’
The DPP, represented by Brendan Kissane, is separately appealing the leniency of Patterson’s sentence, which includes a life imprisonment term with a 33-year non-parole period. Prosecutors argue the sentence is ‘manifestly inadequate’ given the gravity of the crimes and are seeking a life term without the possibility of parole. Kissane acknowledged the hotel mix-up was regrettable but stated there was no evidence of direct communication between jurors and prosecution or police personnel. He defended the use of the mobile phone evidence, asserting it provided the jury with an opportunity to assess Patterson’s potential access to the toxic mushrooms.
Trial background and key figures
Patterson was found guilty of murdering her mother-in-law Gail Patterson, father-in-law Donald Patterson, and Gail’s sister Heather Wilkinson, all of whom died after consuming the poisoned meal. Her estranged husband’s uncle, Ian Wilkinson, survived but was critically ill, leading to Patterson’s conviction for his attempted murder. The trial, held in Morwell, drew significant public and media attention, inspiring podcasts and books. Patterson has consistently maintained her innocence, claiming the deaths were accidental. The appeals hearing is expected to conclude on Thursday, with a decision to be delivered at a later date.
Legal arguments and procedural details
The Court of Appeal judges — Lesley Taylor, Stephen McLeish, and Peter Kidd — are presiding over the two-day hearing. Patterson appeared via video link from the Dame Phyllis Frost women’s prison, while Ian Wilkinson was present in the public gallery. The defense’s appeal includes seven grounds, with the jury sequestration issue being the first and most prominently argued. The prosecution’s appeal focuses solely on the length of the non-parole period, arguing it fails to reflect the severity of the crimes. Both sides presented their initial arguments on Wednesday, with further submissions expected on Thursday.