When beautiful, shy Edith married her elegant banker husband, Julius, she believed that their union would be forever. In spite of her humble background, they have loved each other since the minute they met at a dance. As she learns how to behave in the high-society world Julius has opened to her, she is determined to enjoy every moment. But the Nazi party is growing in power, and her marriage comes under increasing strain. Julius is of Jewish origin—and even some of Edith’s closest family believe their relationship is an abomination, demanding she divorce him.

When Katja Heinz secures a job as a typist in Hamburg working for Doctor Viktor’s clinic, she doesn’t expect to be writing up top secret medical records. Doctor Viktor treated soldiers for PTSD at the end of the first world war – and one of the patients was none other than Adolf Hitler.... The notes in his possession declare Hitler unfit for office; exposing such a secret would destroy the Fuhrer's reputation, and perhaps even change the course of the war.

The occupation has taken much from the Cotillard sisters, and as the Germans increase their forces in the seaside town of Boulogne-sur-Mer, Gabriella, Martine and Simone can’t escape the feeling that the walls are closing in. Yet, just as they should be trying to stay under the radar, Martine’s discovery of a British messenger pigeon leads them down a new and dangerous path. 

Germany, 1941: I stroke the blonde curl away from my daughter’s face, and my heart swells. I never imagined having children, and I never thought I’d love someone this much. Clara is the most precious thing to me. I whisper to her that I will do everything I can to keep her safe.

Vienna, 1937. When beautiful American Kitty becomes engaged to Austrian diplomat Edgar, she finds herself thrown into a very different world in Europe, and soon longs for home. But when the woman designing her wedding dress, Judith, takes Kitty under her wing, she sees the city of Vienna in a new light–a city of culture and music that she can explore with her new friend.

When Stefania Carmichael steps into the mysterious world of Bletchley Park, she immediately finds herself signing the Official Secrets Act. In whispers, she is told that she’s been recruited because of her talent for languages. Before the war ripped Europe apart, Stefania was living in Rome, charming everyone she met, and engaged to the man of her dreams, handsome and brave Matteo. And now everything has changed. With secrets swirling around the building, Stefania finds it hard to know who to trust, until she forms a close bond with two other new recruits.

1940. In a world newly burning with war, and in spite of her American family’s wishes, Virginia d’Albert-Lake decides to stay in occupied France with her French husband. She’s sure that if they keep their heads down, they’ll survive. But is surviving enough? Nineteen-year-old Violette Szabo has seen the Nazis’ evil up close and is desperate to fight them. But when she meets the man who’ll change her life only for tragedy to strike, Violette’s adrift. 

1941, Poland. Though war rages around her and occupying German forces march steadily onward, 16-year-old Aleksandra has lived her life sheltered from danger. Until one day, she goes to school—never to return. Pushed roughly into a truck with other schoolgirls like her, a single ominous word tells her all she needs to know about her fate: Lebensborn.

But while Sophie, a third-year medical student, works long days and nights saving casualties of war at the American hospital, and waits anxiously for news of her fiancé from the front line, her recently widowed twin, Adèle, is determined to enjoy her freedom. Nothing – not the bombs, the curfews or the Nazi officers sidling up to her in nightclubs – can stop her from indulging in the temptations of Parisian society as she accompanies their father to glamorous parties.

Russia, 1917. Petrograd is on the eve of revolution. For Countess Sophia Orlova, the city of her childhood—the only home she has ever known—has become her deadly enemy. The mob are ready to get rid of anyone connected to the old regime, including Sophia. When rebels threaten to shoot Sophia and her husband, they are saved by Nikolai, a fervent supporter of the revolution. Determined to help Nikolai’s cause, Sophia sets up a hospital wing in the house, nursing injured victims by his side.

I sent 19-year-old Phyllis, my youngest recruit, into a city crawling with enemy soldiers. And this beautiful house on a tree-lined street, the headquarters of cold-hearted German soldiers, was the last place she was seen. I trail my fingers along the gilded furniture and see the light dance off the glittering chandeliers. On the top floor, I find the dates inscribed by beaten prisoners, and I know my girl was shown no mercy.

France, 1942: When Kasia is told she will be smuggled out of Poland to work as a radio operator with a French Resistance group, she plans to make the dangerous journey across the border alone. But when she meets a mute girl who she names Elodie, in a ghetto in Warsaw on the eve of her departure, she reminds Kasia so strongly of someone she loved–with one brown eye, and one green–that she knows she can’t leave her behind, no matter the risk....

1944, Germany: After years of hiding from the Nazis, Rachel Epstein and her little sister Mindel are captured by the Gestapo and sent to the concentration camp at Bergen-Belsen. The only ray of light for either girl is that they are together. But on arrival, they are separated. As she’s 17 and deemed an adult, Rachel is sent to work in a brutal factory, whilst four-year-old Mindel is sent into the so-called “star” camp for Jewish prisoners. All on her own, Rachel knows her sister will have no chance of survival - unless she can find someone to take care of her. 

1948, Berlin. World War II has ended and there is supposed to be peace; but Russian troops have closed all access to the city. Roads, railway lines and waterways are blocked and two million people are trapped, relying on airlifts of food, water and medicine to survive. The sharp eyes of the Russian state police watch everything. Anna and Ingrid are both searching for answers - and revenge - in the messy aftermath of war. Both are living in the shadows of a city where the line between right and wrong has become dangerously blurred. But they cannot give up in the search for a lost child.

Holding the faded postcard in her trembling hands, Mia begins to read the one story her grandmother could never tell her, revealing a secret that will change her own life forever....