The married doctor whom convicted child killer Lucy Letby referred to as her "best friend" and "love" has died, having previously turned against her during her trial for murdering and attempting to murder babies at the Countess of Chester Hospital. The doctor's evidence and subsequent testimony were regarded as significant in undermining Letby's defence, making his death a notable development in the long-running case.

The report focuses on the doctor's personal ties to Letby, including messages and notes in which she expressed strong affection for him, and details how their relationship shifted after he gave evidence against her at trial. The Daily Mail article does not specify the cause of death or provide further details on the circumstances surrounding it.