A new Netflix documentary featuring unseen footage, new materials and police testimony on the case of Lucy Letby, has been described as "a complete invasion of privacy" by the former neonatal nurse's parents. 

The 36-year-old is serving 15 whole-life terms for murdering seven infants, and attempting to murder seven others, at the Countess of Chester Hospital between June 2015 and June 2016.

Arriving on the streaming platform this Wednesday (4 February), Netflix has revealed The Investigation of Lucy Letby will feature "new materials and testimony from the British police who investigated the case, and never-before-seen footage of Letby during her arrest and questioning".

In their first public statement since August 2023, when their daughter was jailed for life, John and Susan Letby told The Sunday Times they would not watch the documentary, adding: "It would likely kill us if we did."

Last month, it was confirmed that the Crown Prosecution Service (CPS) would not be charging Letby with any further offences - following the review of evidence submitted by Cheshire Constabulary in July 2025.

Cheshire Constabulary had submitted a file of evidence asking the CPS to consider further allegations against Letby the year before, relating to deaths and non-fatal collapses of babies at the Countess of Chester Hospital and Liverpool Women's Hospital.

The CPS said the extra information it had received from police had not met "the evidential test", prompting renewed calls for her convictions to be reviewed - with the case now being considered by the Criminal Cases Review Commission (CCRC).

Letby's parents told The Sunday Times: "The previous programmes made about Lucy, including Panorama and the almost nightly news showing her being brought out handcuffed in a blue tracksuit are heartbreaking for us. 

"However, this Netflix documentary is on another level. We had no idea they were using footage in our house. We will not watch it - it would likely kill us if we did.

"Heaven knows how much more they have to show. All this taking place in the home where we have lived for 40 years. It is in a small cul-de-sac in a small town where everyone knows everyone. 

"It is a complete invasion of privacy of which we would have known nothing if Lucy's barrister had not told us."

Produced by ITN Productions, the series will include interviews with experts and lawyers from both sides of the case - promising to give "the most comprehensive look at one of Britain's most notorious crimes".

It also marks the first time a family member involved in the prosecution has spoken in a documentary, featuring the mother of one of the victims.

The Letbys also offered a critique of detective Superintendent Paul Hughes, the case's investigating officer, who they described as seeming to have a "deep hatred" of them.

They added: "Why is Paul Hughes, with whom we always co-operated fully, allowed to show the world what took place in our house that morning and Netflix not even have the decency to tell us?

"He seems to have a deep hatred of us even though it was us who first went into Blacon police station in March 2017 to report that [the hospital consultants] Stephen Brearey and Ravi Jayaram were making Lucy a scapegoat."

In response, Cheshire Constabulary has stated it "provided interviews with key members of the investigation team as part of the documentary along with limited investigative material to visually explain the case on an exclusive basis.

"The force — and the officers who feature in the programme — have received no payment for their involvement."