Mushroom murderer Erin Patterson was convicted over three deaths. Now she’ll argue the court got it wrong

An Australian court will review two appeals filed on Wednesday regarding Erin Patterson's conviction for the murders of three family members. The appeals, one from Patterson herself and another from the state's director of public prosecutions, will address whether her convictions should be overturned and if her life sentence without parole is overly harsh.

Patterson, who maintained her innocence throughout the trial, was sentenced in September to life imprisonment with a non-parole period of 33 years for the killings of her estranged husband's parents and her in-laws, Heather Wilkinson. The trial, which lasted 11 weeks, captivated global attention as it centered around the alleged poisoning of beef wellingtons served to the victims on July 29, 2023.

The court will consider seven grounds of appeal against Patterson's conviction, including claims that the jury's sequestration in a hotel with police and media compromised the integrity of the verdicts, and that evidence from her Facebook friends and cell tower data should not have been considered. Patterson also challenges the validity of evidence linking her to death cap mushrooms, which prosecutors argued were deliberately included in the meal to kill the victims.

Meanwhile, the DPP is contesting the severity of Patterson's sentence, arguing it does not adequately reflect the gravity of her crimes and that her solitary confinement is excessive. If Patterson's appeal is successful, her convictions could be quashed, and she might be acquitted or granted a retrial. Conversely, a favorable outcome for the DPP could extend Patterson's non-parole period or result in a life sentence without the possibility of parole.