It was one of the most high-profile serial murder cases in the last few years - and now, Lucy Letby's crimes are being unpacked in Netflix's new documentary. The Investigation of Lucy Letby features never-before-seen footage, detailing the evidence, testimonies and investigation into Letby's killings. The former neonatal nurse, 36, was convicted of murdering seven babies and attempting to murder seven others between 2015 and 2016 while she worked at Countess of Chester Hospital in Cheshire. The