The Investigation of Lucy Letby (2026) is a harrowing UK documentary that delves into one of Britain's most disturbing criminal cases. Through previously unseen footage and exclusive insider interviews, the film reconstructs the events that led to neonatal nurse Lucy Letby's conviction for fatally harming infants in her care. The documentary presents a divisive and emotionally charged examination of the evidence, institutional failures, and the profound impact on the victims' families.

As a documentary, it adopts a meticulous approach, avoiding sensationalism while presenting the facts through police interviews, hospital records, and expert analysis. The pacing is deliberate, allowing viewers to absorb the gravity of each revelation. The film raises critical questions about healthcare oversight, the psychology of those in trusted positions, and the lengthy investigation that ultimately led to conviction.

While the IMDb rating of 5.5 suggests divided reception, the documentary serves as an important historical record of a case that shocked the nation. Viewers should watch this film not for entertainment, but for its sobering examination of systemic vulnerabilities and human tragedy. The 92-minute runtime provides a comprehensive yet accessible overview, making it essential viewing for true crime enthusiasts and those interested in institutional accountability. Its availability online makes this difficult but necessary story accessible to a global audience.