The Investigation of Lucy Letby is at least the fifth documentary that has been produced in the wake of the neonatal nurse’s convictions in 2023 and 2024 on seven counts of murder and seven of attempted murder of babies in her care at the Countess of Chester hospital. Probably the best of them was ITV’s Lucy Letby: Beyond Reasonable Doubt? last summer. It did a fine job of meticulously explaining the evidence against her – and why a growing body of experts believe that at the very least her conviction on the basis of what was gathered is unsafe, and at most that none of the babies was murdered by her, but were victims of a chronically understaffed and mismanaged unit that might have sought to scapegoat an individual for its failings.
The Investigation of Lucy Letby does not compare in its attention to detail, preferring a broader-brush, more emotive telling of the story of either one of the most prolific female serial killers in history or one of the greatest miscarriages of justice in recent times. Its publicity has made much of the fact that it contains hitherto unseen footage of Letby’s arrest at her parents’ home. Her mother and father say they were unaware that it would be shown until Letby’s barrister told them. “We will not watch it – it would likely kill us if we did.” When the footage is shown, you can hear her mother howl in distress as the police take Letby away. It is an almost inhuman sound. It is hard to say what value such an inclusion adds except to warn the viewer to brace themselves for sensationalism along the way as the case is pieced together using accounts from the police, people – from both sides – directly involved with the case, Letby’s best friend Maisie and Letby’s current lawyer (not the one who represented her in court), Mark McDonald, along with media reporting from the time and tapes of her interviews with investigators.
