Detectives investigating serial killer nurse Lucy Letby say they were “surprised” by the amount of material they found at her home and that a “coded system” in her diaries helped officers uncover key evidence.
Letby, one of the most prolific child killers in modern British history, has been jailed for life for murdering seven newborn babies and trying to kill six more between June 2015 and June 2016 in the neonatal ward at the Count of Chester Hospital where she worked.
