Colin Norris

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Colin Campbell Norris (born 12 February 1976) is a British serial killer who was convicted of the murder of four elderly patients and the attempted murders of two others in two hospitals in Leeds, England, in 2002. A police investigation showed Norris to be on duty when five patients fell into sudden hypoglycaemic comas. Suspicions were raised when Norris predicted that healthy Ethel Hall would die at 5:15 am one morning, which is when she went into cardiac arrest, and tests revealed that she had been injected with an extremely high level of man-made insulin. Insulin was missing from the hospital fridge and Norris had last accessed it, only half an hour before Hall fell unconscious. Subsequent investigations would find that the unnatural hypoglycaemic attacks followed him when he was transferred to a second hospital, and hospital records revealed that only he could not be eliminated as a suspect. Detectives believed that Norris was responsible for up to six other suspicious deaths where...

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