Present day, London: When Sophie discovers a photograph of her great aunt Vivi from World War II, it throws her into a world of confusion. Because, as she learns about this secret relative, she quickly realizes that the photograph doesn’t fit with her family’s story. It shows Vivi leaving an address associated with a spy network in London - a place she had no reason to be - and it is dated right before she disappeared.

When the love of Tasha’s life, Luca, joins the air force to fight against the evil Nazi invaders, she knows she has to follow her heart—and him—into battle. Headstrong, impulsive and a daredevil, she’s the perfect recruit. Tasha’s sensible older sister, Nadia, plans only to stop Tasha’s madness and bring her home. But a chance encounter puts her in a plane, soaring above the clouds, and she also finds her calling.

Everything changes when Lilou is given her most important task: to keep a frightened little boy, Eliot, hidden safe in her farmhouse. All alone in the world, Eliot refuses to speak as he clutches his treasured children’s book close to his chest. Inside is a beautiful story of stars, planets and the night sky. But why is this innocent child the one, among thousands, who Lilou must save?

Every time Sebastien speaks to Finley, she finds herself inching closer to him, and soon love begins to grow. But when he tells her he wants to join the English army, to fight the people who have forced his family to face such horror, she must work hard to crush the devastation in her heart. She knows if she were in his shoes, she would do the same thing, and she must be brave too. She will stay in London, waiting for Sebastien, and helping other refugees like him. As the bombs rain down, and the London streets empty, she knows she faces grave dangers.

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.

Auschwitz, 1942: Her entire body trembles as she stands in the infirmary and realises the horrifying truth. She’s a nurse, but instead of saving her fellow inmates, she’s about to be ordered to kill them… Surrounded by thick fog from the nearby forest, Orli stumbles from the cattle truck onto the frostbitten grounds of Auschwitz. Betrayed by her own husband for being a German resistance fighter, she has no one left in the world, and this is now her home.

When Sophie Weiss boards the SS St Louis, she has no reason to stay in Germany. The Nazis have taken everything from her, and her only hope is escape. But when she meets fellow Jewish refugees Rosa, Hannah and Rachel on board, the friendship they form gives Sophie hope that there can be happiness in her future, after all.

Ana Kaminski is pushed through the iron gates of Auschwitz beside her frightened young friend Ester Pasternak. As they reach the front of the line, Ana steps forward and quietly declares herself a midwife--and Ester her assistant. Their arms are tattooed and they’re ordered to the maternity hut. Holding an innocent newborn baby, Ana knows the fate of so many are in her hands and vows to do everything she can to save them.

Berlin, 1944. ‘No! Not my child!’ Annaliese screams, her voice breaking as she pounds the window uselessly. But no-one looks up as the man in the SS uniform cradles her precious baby and strides away. She lies unmoving on the threadbare cot, her throat hoarse from long hours of screaming but her tears keep falling. Her heart has been cleaved in two, now the Nazis have taken the only thing she has left–her child. She is utterly powerless against them. But as Annaliese cries herself to sleep, she makes a vow—she will find her precious baby again. Whatever it takes.

With a fake name written on the papers in her pocket, American photographer Clarisse Alarie knows the dangers of Paris better than most. Haunted by the sight of children being dragged away and carrying a photograph of the brown-eyed little girl everywhere she goes, Clarisse is desperate to make a difference. Soon, Clarisse is risking her life every day. Taking photographs of the terror that has overcome the beautiful city, Clarisse follows members of the Gestapo and hides in plain sight in order to gather evidence of their terrible crimes.

When Nazis break down the front door of 18-year-old Trudi’s home and seize the Jewish couple hiding in her attic, she’s devastated, and is suddenly solely responsible for their two innocent children. The whispered rumours about the resistance are her only hope. A man called Frans and his cousin Piet risk their lives every day helping scared and abandoned Jewish children escape into the countryside. Under the cover of night, she races to beg for their help.

Italy, 1943. With war raging across the rugged cliffs and turquoise waters of his beloved Sicily, Savio’s pen scrawls desperately across the page. His letter must be sent in secret–or his life will be in terrible danger… England, present day. Paige is devastated when her reclusive but beloved Aunt Florence dies–the only family she’s ever known. Inheriting her crumbling cottage, Paige finds an unfinished note. ‘I am sorry, Paige. It’s time to tell you everything. It all began in Sicily…’

Germany, 1945. As the ground shakes and the air raid sirens wail, Katja holds her tiny baby to her chest. She pictures Karl’s handsome face and kind blue eyes, her breath catching at the thought of him heading back to the front. She must never tell anyone about the letters she delivered for him or the other secret she is hiding....

Paris, 1943. German soldiers drag me out onto the cobbled street and push me toward the waiting truck. I force myself to face forward as tears stream down my cheeks. If I look back, they’ll know. I can’t let them find my baby girl....

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.