Overview
- The Victorian Court of Appeal has fixed a two-day hearing for August 19–20, 2026 to hear Erin Patterson's appeal against her conviction and the Director of Public Prosecutions' separate challenge to her sentence.
- Patterson was convicted of the July 28, 2023 murders of Gail and Don Patterson and Heather Wilkinson and the attempted murder of Ian Wilkinson, and was sentenced in September 2025 to life with a 33-year non-parole period.
- Her appeal, lodged on seven grounds, alleges unfair and oppressive cross-examination, that certain evidence caused prejudice, and that the prosecution changed its case in closing; she seeks to have the convictions quashed and a new trial ordered.
- The prosecution linked the deaths to death-cap mushroom poisoning after a beef wellington lunch and used toxicology plus circumstantial material such as mobile phone cell‑tower data, iNaturalist mushroom sightings, and posts from a Facebook true‑crime group.
- The appeal will decide both the fate of Patterson's conviction and whether the sentence is increased, a ruling that could shape how courts treat forensic links and social‑media evidence in complex poisoning prosecutions and will directly affect the surviving victim and the families of the deceased.