Mushroom murderer trial undermined by 'catastrophic' hotel mix-up, appeal court told

Erin Patterson, an Australian woman serving a life sentence for murdering three family members and attempting to kill another with a poisoned meal, faces an appeal that could overturn her conviction. The appeal alleges the trial was compromised due to a hotel mix-up that placed jurors, a key witness, and prosecution staff at the same hotel where the jury deliberated.

Patterson's lawyers argue this created a "catastrophic" situation that undermined the integrity of the verdicts and necessitates a retrial. Additionally, they claim certain evidence, including phone tower data linking Patterson to the locations where death cap mushrooms were found, should not have been presented to the jury as it was speculative.

The Director of Public Prosecutions counters that the jury's location was likely accidental and that the phone evidence was relevant in determining if Patterson had the opportunity to source the mushrooms. Patterson did not attend the appeal in person but watched via video link, while her estranged husband Simon, who was meant to be present, canceled at the last minute due to his belief that Patterson had been trying to poison him.

The appeal also touches on Facebook messages Patterson sent to her estranged husband and his family, which her lawyers argue should not have been allowed as it was prejudicial. Despite these arguments, prosecutors maintain the guilty verdicts are "inescapable" due to the circumstances surrounding the incident and the evidence presented.