Victoria's Court of Appeal has rejected Erin Patterson's attempt to overturn her convictions for murdering three relatives with death cap mushrooms and has increased her punishment to life imprisonment without the possibility of parole. The ruling removed the 33-year non-parole period attached to her original life sentence.
Patterson, 52, had been convicted of three murders and one attempted murder arising from a July 2023 lunch at her home in rural Victoria. Her guests were Don and Gail Patterson, the parents of her estranged husband, as well as his aunt Heather Wilkinson and Wilkinson's husband, Ian. Don, Gail and Heather died from organ failure within a week. Ian Wilkinson survived after becoming gravely ill.
Prosecutors said Patterson deliberately served a beef Wellington meal containing lethal death cap mushrooms. A jury accepted that case and rejected Patterson's position that the food had been contaminated accidentally. The motive for the killings has not been established publicly.
In her appeal, Patterson argued that the convictions represented a miscarriage of justice and sought either acquittal or a new trial. Her lawyers raised several alleged irregularities, including that jurors had stayed at the same hotel as a police witness and members of the prosecution. They also challenged decisions about evidence and described her cross-examination as oppressive.
The appeals court dismissed the challenge to the convictions. Justice Stephen McLeish characterized the crimes as carefully planned and extraordinarily cold and calculated, saying they warranted the strongest denunciation. Patterson watched the proceeding by video from a maximum-security prison outside Melbourne rather than appearing in the courtroom.
The prosecution had separately argued that allowing parole consideration after 33 years did not adequately reflect the seriousness of the crimes. It described the offending as involving betrayal and urged the court to impose life without parole. The court accepted the case for a harsher sentence and eliminated Patterson's eligibility to seek release.
The original trial lasted 11 weeks and attracted unusually intense international attention, with reporters, film crews, podcasters and spectators gathering in Morwell. That attention reflected the unusual means of poisoning as well as uncertainty about why the victims were targeted.
The appeal ruling resolves Patterson's challenge at Victoria's intermediate appellate level while leaving the three murder convictions and the attempted-murder conviction intact. Its immediate practical effect is on sentence: Patterson no longer has a date at which she can first ask a parole board to consider her release.
