Daniela Poggiali Italian Supreme Court acquittal — walkthrough

A walkthrough of the Daniela Poggiali case as international healthcare-serial-killer overturning parallel for the Letby pathway. Poggiali was an Italian nurse convicted in 2016 of murdering a patient at Lugo hospital using potassium chloride. The conviction architecture relied on shift-attendance pattern evidence and toxicological findings. The Italian Supreme Court (Corte di Cassazione) acquitted her in 2021 after independent expert review found the statistical and toxicological evidence unreliable. The piece sets out what the parallel shows: that healthcare-serial-killer convictions can and do overturn on independent expert review of the same statistical and biochemical methodology at issue in the Letby case, and that the international comparator base is therefore not unidirectionally supportive of the Crown's framing.