Children's-book author Young (who, as Sara Pennypacker, penned the celebrated Stuart series) makes a stunning adult debut with this beautifully told and heart-wrenching novel set in WWII Europe. Cyrla, half-Jewish, is no longer safe hiding in the home of her Dutch relatives under the increasingly harsh Nazi occupation. When cousin Annika, whom Cyrla closely resembles, becomes pregnant by a German soldier, Annika's father enrolls her in a Lebensborn, a birthing center for Aryan children, where the slogan is Have one baby for the Führer. In a tragic turn of events, Cyrla discovers her only chance of survival is to hide in plain sight: she must assume Annika's identity and live in the German Lebensborn until rescued. Within the Lebensborn's walls, mothers-to-be receive proper nutrition and medical care until their children are taken from them for adoption into Aryan families The horrors Cyrla witnesses are softened only by her resounding optimism and strength. (Jan.)