September 1, 1939: Sixty-year-old Janusz Korczak and the students and teachers at his Dom Sierot Jewish orphanage are outside enjoying a beautiful day in Warsaw. Hours later, their lives are altered forever when the Nazis invade. Suddenly treated as an outcast in his own city, Janusz--a respected leader known for his heroism and teaching--is determined to do whatever it takes to protect the children from the horrors to come.

Sixteen-year-old Noa has been cast out in disgrace after becoming pregnant by a Nazi soldier and being forced to give up her baby. She lives above a small rail station, which she cleans in order to earn her keep. When Noa discovers a boxcar containing dozens of Jewish infants bound for a concentration camp, she is reminded of the child that was taken from her. And in a moment that will change the course of her life, she snatches one of the babies and flees into the snowy night.

Everything is going to be perfect. Greyson comes home from deployment to live the life she and her husband Caden dreamed of. He has a surgical residency, and she has a psychiatric practice in the basement of their Manhattan brownstone. Caden loves his wife more than he can measure. But he starts hearing whispers. Someone else loves her. Someone else wants her. There's someone else, and though whoever's behind the whispers will move mountains to have her, Caden will move heaven and earth to keep her.

Mahmoud’s passion for his wife, Fereiba, a schoolteacher, is greater than any love she’s ever known. But their happy, middle-class world implodes when their country is engulfed in war and the Taliban rises to power. Mahmoud, a civil engineer, becomes a target of the new fundamentalist regime and is murdered. Forced to flee Kabul with her three children, Fereiba must find a way to cross Europe and reach her sister’s family in England. With forged papers and help from kind strangers they meet along the way, Fereiba make a dangerous crossing into Iran under cover of darkness.

Paris, 1944: The war is nearly over, but for members of the Resistance in occupied France, it is more dangerous than ever before. Twenty-five-year-old Gabby Foucher loathes the Nazis, though as the concierge of 10 rue Royale, she does her best to avoid conflict - unlike her bolder sister Yvette, who finds trouble at every turn.