Lost Girls of Paris by Pam Jenoff
One morning while passing through Grand Central Terminal on her way to work, Grace Healey finds an abandoned suitcase tucked beneath a bench. Unable to resist her own curiosity, Grace opens the suitcase, where she discovers a dozen photographs - each of a different woman. In a moment of impulse, Grace takes the photographs and quickly leaves the station. Inspired by true events, and shining a light on the heroics of the brave women of the war Jenoff weaves a tale of courage, sisterhood and the great strength of women to survive in the hardest of circumstances.