To access episodes from previous series of The Trial, subscribe to The Crime Desk. Join today at thecrimedesk.com.Click here to sign up for The Crime Desk's weekly newsletter. It's free and packed with exclusive interviews, expert insight, and gripping deep dive investigations from across the world.Lucy Letby is a child killer. Last year she was convicted of murdering seven babies and trying to murder six more while working as a neo-natal nurse at the Countess of Chester Hospital, in the NW of England and was sentenced to spend her life in jail. She also went back in c...