Isa de Smit was raised in the vibrant, glittering world of her parents' small art gallery in Amsterdam, a hub of beauty, creativity, and expression, until the Nazi occupation wiped the color from her city's palette. The "degenerate" art of the Gallery de Smit is confiscated, the artists in hiding or deported, her best friend, Truus, fled to join the shadowy Dutch resistance. And masterpiece by masterpiece, the Nazis are buying and stealing her country's heritage. So when the unpaid taxes threaten her beloved but empty gallery, Isa decides to make the Nazis pay.

London, 1953. Louise is still adjusting to her postwar role as a housewife when she discovers a necklace in a box at a secondhand shop. The box is marked with the name of a department store in Paris, and she is certain she has seen the necklace before, when she worked with the Red Cross in Nazi-occupied Europe—and that it holds the key to the mysterious death of her friend Franny during the war. Following the trail of clues to Paris, Louise seeks help from her former boss Ian, with whom she shares a romantic history.

Summer, 1940. Nineteen-year-old Jakob Novis and his quirky younger sister Lizzie share a love of riddles and puzzles. And now they’re living inside of one. The quarrelsome siblings find themselves amidst one of the greatest secrets of World War II—Britain’s eccentric codebreaking factory at Bletchley Park. As Jakob joins Bletchley’s top minds to crack the Nazi's Enigma cipher, fourteen-year-old Lizzie embarks on a mission to solve the mysterious disappearance of their mother.

It is 1943, and for four years, 16-year-old Stefania has been working for the Diamant family in their grocery store in Przemsyl, Poland, singing her way into their lives and hearts. She has even made a promise to one of their sons, Izio - a betrothal they must keep secret since she is Catholic and the Diamants are Jewish.

Nuri is a beekeeper and Afra, his wife, is an artist. Mornings, Nuri rises early to hear the call to prayer before driving to his hives in the countryside. On weekends, Afra sells her colorful landscape paintings at the open-air market. They live a simple life, rich in family and friends, in the hills of the beautiful Syrian city of Aleppo - until the unthinkable happens. When all they love is destroyed by war, Nuri knows they have no choice except to leave their home. But escaping Syria will be no easy task: Afra has lost her sight.