Pam Jenoff does it again with another amazing WWII historical fiction. This book is about a fictional resistance line called Sapphire Blue and how these women contributed and impacted by it. I love seeing Hannah and Lily's relationship bloomed and was so sad to see read how torn Hannah was with her actions and how it impacted Lily's family. There was some unexpected turns in the books and there is one scene that broke my heart. I admire the resilience of these characters.