Isabelle Shelton has always found comfort in the predictable world of her mother’s dressmaking shop, Mrs. Shelton’s Fashions, while her sister Sylvia turned her back on the family years ago to marry a wealthy doctor whom Izzie detests. When their mother dies unexpectedly, the sisters are stunned to find they’ve jointly inherited the family business. Izzie is determined to buy Sylvia out, but when she’s conscripted into the WAAF, she’s forced to seek Sylvia’s help to keep the shop open.

Amsterdam, 1941. German forces have invaded Amsterdam. As the tension in the city increases, the Dutch Resistance is born. Tormented by what is happening in his city, Christiaan joins the Resistance. He risks everything to shield the oppressed and fight for the freedom of his beloved nation. His brother—Floris—is ruthless and driven to succeed. Promoted to the Bureau of Jewish Affairs, he becomes instrumental in hunting Jews to transport them to the Nazi death camps.

Juliette and her husband have finally made it to France on the romantic getaway of her dreams—but as the days pass, all she discovers is quite how far they’ve grown apart. She’s craving a new adventure, so when she happens across a tiny, abandoned shop with a for-sale sign in the window, it feels fated. And she’s about to learn that the forgotten bookshop hides a lot more than meets the eye.

1940, Italy. Lili and Esti have been best friends since they first met at university. When Esti’s son Theo is born, they become as close as sisters. While a war seethes across borders, life somehow goes on—until Germany invades Italy, and the friends suddenly find themselves in occupied territory. Esti, older and fiercely self-assured, convinces Lili to join the resistance efforts. But when disaster strikes, a critically wounded Esti asks Lili to take a much bigger step: To go on the run with Theo. Protect him while Esti can’t.

In July 1944, Arielle von Auspeck arrives at the glamorous Hotel Ritz in occupied Paris. Half French, half German, she is happy to be back in France, where her husband, Gregor, a retired colonel, will join her soon from Germany. Arielle and Gregor have thus far been able to hide their private opposition to Hitler. Then her world falls apart. She receives word that Gregor was part of Operation Valkyrie, a failed attempt to assassinate Hitler in Poland, and has been shot as a traitor.