Context
Rachel Aviv’s May 2024 long-form piece in The New Yorker, ‘A British Nurse Was Found Guilty of Killing Seven Babies. Did She Do It?’, was the first major international journalistic investigation of the Letby convictions. Published 13 May 2024 (subsequently issued in the print magazine of 20 May 2024), it broke the specialist conviction-safety critique — until then largely confined to Private Eye, Prof. Richard Gill’s open letters and a handful of statisticians — into the international mainstream.
The piece is reference-summarised on this page rather than reproduced. The original is at newyorker.com.
What the piece covers
Aviv walks through, in turn: the structure of the prosecution’s statistical argument on the rota-style chart (and the Royal Statistical Society’s published warnings about its selection effects); the Roche Cobas immunoassay results that underpinned the insulin counts and the absence of confirmatory mass spectrometry; the clinical-pathology record for several indicted cases, including the natural-cause differential diagnoses that paediatricians she interviewed considered consistent with the deaths; the institutional-narrative context at the Countess of Chester Hospital and the timing of the police referral; and the handwritten-notes evidence that the prosecution characterised as confessional and that independent psychologists characterise as stress-diary writing.
The piece situates the case within the broader pattern of nurse-serial-killer prosecutions internationally — Lucia de Berk (Netherlands, exonerated 2010), Ben Geen (UK, contested), Charles Cullen (US, confessed) — and their characteristic reliance on statistical-cluster methodology in the absence of direct eyewitness or forensic evidence.
Reporting-restriction context
The piece was geo-blocked from access in the United Kingdom during the June–July 2024 Child K retrial period under the reporting restrictions then in force. The geo-block decision attracted significant media-law commentary at the time and is one of the procedural episodes the post-2025 commentary repeatedly returns to.
Why this piece matters for the public-interest record
For lucyletbyfacts.com’s purposes the Aviv piece is load-bearing: it is the single article most readers and journalists cite as the entry point into the conviction-safety debate. Most of the subsequent coverage (Hammond in Private Eye, Hitchens, McDonald’s 2025 press conferences, the Netflix documentary brief, and much of the international scientific correspondence that followed the February 2025 Shoo Lee Panel) cites or builds on it. The piece long predates the Panel and the CCRC application, which means its specific factual claims should now be read alongside the subsequent expert-panel and CCRC-pathway material rather than on their own.
Read alongside
Rachel Aviv — biography, Evidence: the shift chart, Evidence: insulin assay, Evidence: air embolism, Shoo Lee Panel press conference (Feb 2025), CCRC referral pathway.