New Concerns Over Conviction
On October 4, 2011, new concerns were raised about the safety of Norris's conviction. Prof Vincent Marks - a leading expert on insulin poisoning - said the jury at Norris's trial was led to believe by experts that a cluster of hypoglycaemic episodes, among people who were not diabetic, was sinister. The professor said international medical studies carried out in the years since the 35-year-old Glaswegian was convicted told a different story. "Looking at all the evidence, all I can say is I think Colin Norris's conviction is unsafe," Prof Marks said.
Prof Marks says the four patients picked out by the experts after Mrs Hall's death "were all at very high risk of developing spontaneous hypoglycaemia" because they had risk factors such as malnutrition, infection and multi-organ failure.
Legal observers have noted that if the medical evidence is discredited then the case against Norris collapses, there being little motive and no forensic evidence linking him to the crimes.
Read more about this topic: Colin Norris
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