Lucy Letby: how did a nurse commit such unthinkable murders?

Trial detailed the deaths of newborns and harm done to other babies – but we may never know why she became a murdererIt was, as one doctor put it, the safest place in the world. A place where babies smaller than an adult’s hand take their first fragile breaths, where every pounding heartbeat is cause to celebrate, and where – almost always – those born on the edge of life eventually go home with their parents.To imagine a killer stalking the quiet, hopeful corridors of a