Retired detective Stuart Clifton's review found "no evidence" Letby caused deliberate harm to tots in her care. ‌The former nurse is serving 15 life sentences after being convicted of murdering seven babies and the attempted murder of seven more. But Stuart, a cop for 31 years, found no medical evidence any of the babies suffered intentional harm. ‌View 5 Images Letby worked at Countess of Chester Hospital (Image: Countess of Chester Hospital)He told The Sun: "This is likely the greatest miscarriage of justice this century -and that we have seen in a very long time. The prosecution case also used a staffing rota to show Letby was present for all 14 murders and attempted murders.