The parents of a baby who they believe was an attempted murder victim of Lucy Letby have recalled their chilling interaction with the serial killerThe mother said she immediately 'burst into tears', thinking the worst, and desperately asking Letby if her child was dead. Chillingly, she said that Letby 'just laughed' – a reaction that has stayed with her over the years. Chillingly, after seeing his parents' reactions to Letby's conviction on TV, their son asked: 'Is that the naughty nurse that tried to kill me?' McDonald said he has 26 separate experts and 1,000 pages of fresh evidence to back up his claim that Letby is innocent. Lucy Letby: Murder Or Mistake airs on Channel 4 on Monday at 9pm.