"From the author of the runaway bestseller The Orphan's Tale comes a remarkable story of friendship and courage centered around three women and a ring of female secret agents during World War II.1946, Manhattan. 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...