New Research Challenges Evidence in Lucy Letby's Conviction

Was Letby rightfully convicted of murder or was she the victim of a catastrophic miscarriage of justice?
New Research Challenges Evidence in Lucy Letby's Conviction
Above: A TV broadcasts the judge sentencing Lucy Letby in Manchester, England, on Aug. 21, 2023. Image credit: Christopher Furlong/Getty Images

The Spin


Narrative A

Lucy Letby was found guilty after a jury deliberated overwhelming evidence for more than 100 hours. Post-it notes on which she wrote 'I killed them all' and baby collapses tied exclusively to her shifts go far beyond coincidence. With her conviction, justice was served for families who waited eight years to see accountability for crimes committed against the most defenseless victims imaginable.

Narrative B

The insulin evidence that anchored Letby's conviction has been shattered by peer-reviewed research showing premature babies naturally produce sky-high insulin readings — especially when exposed to infection or antibiotics, exactly the conditions present at Countess of Chester. The jury was told these levels were impossible without poisoning, but that was flat-out wrong. The CCRC must refer this case to the Court of Appeal immediately.


Metaculus Prediction


Go Deeper

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© 2026 Improve the News Foundation.

All rights reserved.

Version 7.16.0