Former neonatal nurse Lucy Letby was sentenced to a whole life order after being found guilty of murdering seven babies and the attempted murder of seven more while working at the Countess of Chester Hospital between 2015-2016. Her case has been described as one of the worst serial killer cases in modern UK healthcare. Despite her conviction, a team of campaigners raised concerns about the evidence used to convict her. Letby’s barrister, Mark McDonald, who appears in the Netflix documentary,