An Australian court has ruled that the crimes of Erin Patterson were truly dreadful and must never be released from prison.

The Crown appeals a life sentence that offers a possibility of parole after 33 years, calling it manifestly inadequate for the betrayal and cruelty of her acts.

Patterson was jailed for life after killing three relatives and attempting to kill a fourth by serving them death‑cap mushrooms in a beef Wellington at her Victoria home in 2023.

The 51‑year‑old attended the Court of Appeal via video link from prison and will be eligible for release after 33 years, a term the prosecutors argue undermines the gravity of the crime.

Victims were Don and Gail Patterson and Gail’s sister Heather Wilkinson, all aged 70 or 66, who died after shocking illnesses caused by the poison. Their husband Ian Wilkinson survived, but is still suffering long‑term effects.

Prosecutors highlighted the betrayal of trust, describing the murder as the culmination of a plan orchestrated over months. They argued that Patterson lured victims to a family lunch, served deadly mushrooms, and lied about a cancer diagnosis to calm them, even when the meal was clearly lethal.

During sentencing, Justice Christopher Beale noted that Patterson’s harsh prison conditions might give her a glimmer of hope for release, but prosecutors said this was overstated and the conditions would relax over time.

Brendan Kissane listed the activities available to Patterson in prison—an exercise yard and crocheting—while the judge warned that solitary confinement could continue for years. The Crown argues that if the court does not uphold the life sentence, the minimum term should be increased to reflect the seriousness of her crimes.

The court will reserve its decision on both the appeal against the sentence and the appeal to overturn her convictions, meaning the outcome may take weeks or months. In the meantime, Patterson’s lawyers claim a catastrophic mix‑up at trial, including a hotel stay with the jury, and that some evidence was speculative, constituting a miscarriage of justice.