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AI Protects Secrets in Lucy Letby Documentary
13 Mar
Summary
- AI disguised individuals to protect their anonymity in the documentary.
- The documentary focuses on the investigation of Lucy Letby.
- This AI use is compared to older methods of witness protection.

Netflix's documentary, 'The Investigation of Lucy Letby,' has employed artificial intelligence in a unique manner to protect the anonymity of individuals connected to the case. The film, which delves into the investigation of British neonatal nurse Lucy Letby, convicted of murdering seven infants, uses AI not for generating fictional content, but to digitally disguise two key contributors.
Contributors identified as 'Sarah,' the mother of a victim, and 'Maisie,' a former colleague of Letby, had their features digitally altered. This measure was taken to shield them from potential harm or distress, drawing parallels to older true crime documentary techniques that used voice modulators and shadowed faces to conceal witness identities.
The documentary explicitly disclosed this use of AI through an on-screen disclaimer and within its content, a transparency that has been well-received. This strategic application of AI highlights a responsible use of technology in sensitive narratives, ensuring the safety of those involved while still presenting a compelling account of the investigation.




