The article provides a detailed account of Erin Patterson's life, her relationship with her ex-husband Simon, and the tragic events that led to the deaths of her former in-laws, Don and Gail Patterson. Erin and Simon had a tumultuous relationship marked by multiple separations and reconciliations. They had two children together and remained co-parents even after their separation in 2015. Erin was described as a devoted mother and was known for her generosity, having inherited significant sums of money which she used to support her family and Simon's siblings. Despite their separation, Erin maintained a close relationship with Simon's parents, attending family events and being considered a part of the family. However, tensions arose in late 2022 when Simon listed himself as separated on his tax return, leading to financial disagreements. Erin filed a child support claim, and both parties agreed to reach a financial agreement. The article also highlights Erin's personal struggles, including body image issues and a history of binge eating and purging. She was active in an online true crime Facebook group, where she was known for her investigative skills. In 2022, Erin expressed frustration with Simon and his family in messages to the group, which she later regretted. The article concludes with the tragic event of a deadly lunch at Erin's home in Leongatha, which resulted in the deaths of Don and Gail Patterson. The exact cause of the poisoning remains under investigation, and Erin will return to court at a later date to face the legal consequences of the incident.