 of trying to kill another. Last year, nurse Lucy Letby was found guilty of murdering seven helpless infants and attempting to kill six more. Today, another conviction, the attempted murder of an extremely premature baby just two hours after she was born. In court in Manchester in northwest England, the prosecution said Letby had displaced the baby's breathing tube. A doctor saw her standing next to the incubator doing nothing as the child's blood oxygen levels fell.