On holiday with friends, young historian Briony Andrews becomes fascinated with a wartime story of a ruined villa in the hills behind Naples. There is a family connection: her grandfather had been a British soldier during the Italian campaign of 1943 in that very area. Handed a bundle of letters that were found after the war, Briony sets off to trace the fate of their sender, Sarah Bailey. A gripping and moving story spanning 70 years, set in Italy and in Norfolk.