Code Name Verity is a young adult historical fiction novel by Elizabeth Wein that was published in 2012. It focuses on the friendship of two young British women, in World War II – a spy captured by Nazis in German-occupied France and the pilot who took her there. It was named a Michael L. Printz Honor Book in 2013, and shortlisted for the Carnegie Medal. A loose sequel, Rose Under Fire, was published in 2013. A prequel novel, The Pearl Thief, was published in May 2017; it is a mystery involving Code Name Verity's protagonist Julie a year before the war starts. Source: Wikipedia (en)