Not your average WWII Historical Fiction

This story follows 3 strong female characters, Grace, Marie and Eleanor during and after WWII. The story starts off with Grace finding an abandoned suitcase in Grand Central Station - she decided to open the suitcase (which I wouldn't have done but that would spoil the whole story) and finds pictures of 12 girls. This mystery intrigues her so much that she starts investigating the origin and story behind these girls. She discovers that one of them is Marie who lived in London. Eleanor hired her to be a spy in France to help the allied forces beat the Germans. This was a non stop, action filled book with a ton of mystery and a little bit of love. The writing was beautiful and even with the timelines being so close to each other the story was easy to follow.