I resisted reading this book because concentration camp sagas are sad and depressing; the inhumanity hard to digest. But the author quickly drew me into the story about three women from different countries whose paths eventually intersect. Caroline Ferriday, a liaison to the French consulate, is safe in America, but WWII becomes personal when her lover is trapped overseas. Her character is based on the true story of a New York socialite who championed a group of concentration camp survivors after the war known as the Rabbits. In Poland, Kasia Kuzmerick is drawn into the underground resistance; a decision which lands Kasia, her mother and her sister in Ravensbruck, the notorious Nazi concentration camp for women. The terrible conditions provide for difficult yet compelling reading. Unable to find work, young German doctor Herta Oberheuser answers an ad for a medical job only to find herself at Ravensbruck caring for prisoners. Through Herta, we see how her Nazi upbringing allows her to lose sight of humanity as she oversees heinous medical experiments. Although the subject is gruesome, the book provides at least some small voice for the horrors one group of Polish women endured at the hands of the Nazis.