A judge on Monday was set to sentence Lucy Letby, the most prolific child killer in modern UK history, for murdering seven babies and attempting to kill six others while working as a neonatal nurse at a hospital in northern England.

Justice James Goss could level the most severe sentence possible under British law by imposing multiple life terms to ensure that Letby will spend the rest of her life behind bars. Following 22 days of deliberation, a jury at Manchester Crown Court convicted Letby, 33, of killing the babies over a yearlong period that saw her prey on the vulnerabilities of sick newborns and their anxious parents.