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

Key Points:

• Erin Patterson, convicted for poisoning three relatives with death cap mushrooms in Victoria in 2023, is appealing her life sentence, citing a "catastrophic" jury mix-up where jurors stayed at the same hotel as prosecutors and a key witness, potentially undermining the verdict's integrity.
• Patterson's lawyers argue that some prosecution evidence was speculative, particularly regarding her alleged foraging for death cap mushrooms based on mobile phone tower data and iNaturalist sightings, and that crucial defense evidence was wrongfully excluded.
• The Director of Public Prosecutions is also appealing, claiming the 33-year parole period is "manifestly inadequate," while defending the integrity of the trial despite acknowledging the hotel mix-up as accidental.
• Additional appeal points include claims of irrelevant and prejudicial Facebook messages being admitted, aggressive cross-examination tactics by the chief prosecutor, and problematic closing arguments during the original trial.
• Prosecutors maintain that the evidence overwhelmingly supports Patterson’s guilt, highlighting the circumstances of the poisoning, differing medical outcomes, and incriminating conduct, asserting the guilty verdicts were inescapable.