// BBC UK NEWS — CRONACA
Murder or medical mix-up? New questions in the case of killer nurse Colin Norris
For two decades, Ethel Hall's family believed that staff nurse Colin Norris murdered the 86-year-old by injecting her with insulin while she recovered from a broken hip in a Leeds hospital.
After his latest appeal against conviction, some members of Ethel's family are having doubts.
"The evidence, it's just not sitting right to me," daughter-in-law Helen Hall told a new BBC podcast, Disclosure Investigates: Killer on the Ward.
Norris was convicted in 2008 of killing Ethel and three other elderly patients as well as attempting to murder a fifth.
The Court of Appeal rejected his challenge against his convictions last year but the new BBC podcast has reviewed medical records, looked again at police interviews and heard about new scientific discoveries.
It reveals a scenario in which the murders may never have taken place at all.
Ethel Hall was in hospital recovering from a broken hip
The podcast series comes a week after a public inquiry reported on the case of former neonatal nurse Lucy Letby who was convicted of murdering seven babies and attempting to murder seven others at a hospital in Chester a decade ago.
While the circumstances are very different, Norris' supporters also argue that his case hinges on disputed interpretations of medical evidence.
The story begins in 2002 when Norris, a 26-year-old nurse, originally from Glasgow, found Ethel in an hypoglycemic coma as she recovered from a broken hip.