Behind the sterile walls of a neonatal ward, a silent predator operated in plain sight, turning a place of healing into a site of unimaginable tragedy. The upcoming Netflix documentary, The Investigation of Lucy Letby, promises to peel back the layers of a case that shook the foundation of the British healthcare system.

The documentary promises to outline the journey into one of the most haunting criminal cases in modern British history.

The documentary The Investigation of Lucy Letby provides an exhaustive look at the multi-year police operation known as Operation Hummingbird. Viewers will see never-before-seen footage of Lucy Letby getting arrested and the subsequent intense police interviews that took place, the official press release states, as mentioned by Variety.

It aims to reconstruct the timeline of the tragic events that occurred within the neonatal unit over twelve months. Beyond the technicalities of the trial, the film focuses on the emotional gravity of the situation by including testimony from a victim's mother.

According to an official press release (via Variety), the documentary focuses on a series of mysterious infant collapses that happened between 2015 and 2016 at the Countess of Chester Hospital, sparking a massive criminal inquiry. The investigation eventually centered on nurse Lucy Letby, who was convicted of murdering seven infants and attempting to kill several others.

According to all 2025 reports from the BBC, the legal proceedings against Lucy Letby have reached a new milestone. Despite the emergence of further evidence, authorities have determined that she will not face any additional criminal charges at this time. 

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Key figures and experts provide a comprehensive look at the individuals who brought this case to light.

The Investigation of Lucy Letby will feature critical contributions from the British police officers who led the investigation. These detectives provide firsthand accounts of the challenges they faced while gathering evidence against a medical professional.

Their testimony explains the meticulous process required to connect the nurse to the sudden and suspicious infant deaths. This production also features lawyers from both the prosecution and defense teams to offer a balanced view of the proceedings.

"The film includes testimony from the British police who investigated the case and never-before-seen footage of Letby," the official press release states, as mentioned by Variety. By including diverse voices, director Dominic Sivyer ensures that the complex legal landscape of the case is fully explored. 

After the recent 14-year-old abduction documentary, fans of true crime should get ready for the official arrival of this Netflix documentary.

Netflix has officially scheduled the global premiere of The Investigation of Lucy Letby for February 4, 2026. The ninety-minute feature documentary will be available to stream simultaneously in all territories. The production is overseen by Caroline Short and Ian Rumsey, who serve as executive producers for the project.

This strategic release allows a worldwide audience to engage with the new materials and evidence that the production team from ITN Productions has meticulously gathered over several years. As one of the most anticipated true crime projects of the year, it is expected to spark significant conversation regarding hospital safety and criminal justice.

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Are you ready to discover what happened with those newborns in The Investigation of Lucy Letby? Let us know in the comments below.