From Lucy Letby to 'Devil's Daughter' – meet UK's most notorious female serial killers The evil crimes of Lucy Letby stunned the nation - and staked the neonatal nurse as the worst child serial killer in British history.
Dr Mohammed Qasim, a criminologist at the London School of Economics, said: "Letby broke all the normal rules when it comes to serial killers.
The 35-year-old murdered seven babies and attempted to kill seven other newborns during her time at the Countess of Chester Hospital in 2015 and 2016.
"No-one will probably ever know what drove her to take the lives of newborn babies but there are two possible explanations, in my view.
Letby, dubbed 'Nurse Death' by ward colleagues before her arrest, employed chilling methods to harm her defenceless victims.
