Discover the powerful and unforgettable story of female resistance from the New York Times bestselling author, inspired by real events 'Code Name Sapphire will break your heart and, at the same time, remind you of the courage and resilience of the human spirit' Kristin Harmel A train bound for Auschwitz. One route to freedom . . . 1942. After her fiancé is killed in a pogrom, Hannah Martel narrowly escapes Nazi Germany and takes temporary refuge with her cousin, Lily, in Brussels. Safe for now, but desperate to flee Europe for good, Hannah joins the Sapphire Line: a secret resistance network led by a mysterious woman named Micheline and her enigmatic brother, Mateo. Freedom is tantalisingly close. But when Lily's family are arrested and slated for deportation to Auschwitz, Hannah finds herself torn between her loyalties and her own determination to escape . . . How much is Hannah willing to sacrifice to save the people she loves?