The book of last letters

London, 1940. When nurse Elsie offers to send a reassuring letter to the family of a patient, she has an idea. She begins a book of last letters: messages to be sent on to wounded soldiers' loved ones should the very worst come to pass, so that no one is left without a final goodbye. But one message will change Elsie's life forever. When a patient makes a devastating request, can Elsie find the strength to do the unthinkable? London, present day....