Her Life Sentence Stands as Court Rejects Erin Patterson Appeal in Mushroom Murders Case

Conviction and sentence

Patterson, 52, was sentenced to life in prison with a non-parole period of 33 years for murdering three people and attempting to murder a fourth. The victims became ill after eating a beef Wellington lunch she served in 2023.

Gail and Don Patterson, who were her in-laws, and Gail’s sister, Heather Wilkinson, died days after the meal. Heather’s husband, Ian Wilkinson, was seriously poisoned, spent time in intensive care and later testified at trial.

Patterson testified in her own defense and has said the deaths were a tragic accident. Her husband had also been invited to lunch but canceled the night before; the couple were separated.

Arguments in the appeals

Patterson’s attorneys argued that her conviction should be overturned, citing concerns about jury sequestration, prejudicial evidence and the prosecution’s closing arguments. They said evidence admitted at trial caused a substantial miscarriage of justice.

Prosecutors challenged the 33-year non-parole period, calling it manifestly inadequate for crimes they described as truly dreadful. They also argued the sentencing judge should not have considered likely solitary confinement due to the case’s unprecedented media coverage, saying Patterson had brought that notoriety upon herself.

Possible outcomes and setting

The Victorian Court of Appeal could have quashed the conviction and ordered a retrial, or overturned it and acquitted Patterson if she succeeded. Patterson was not expected to attend court in person.