Rome, 1943. With the fall of Italy’s Fascist government and the Nazi regime occupying the streets of Rome, British ballerina Julia Bradbury is stranded and forced to take refuge at a hospital on Tiber Island. But when she learns of a deadly sickness sweeping through the quarantine wards—a fake disease known only as Syndrome K—she is drawn into one of the greatest cons in history. Alongside hospital staff, friars of the adjoining church, and two Allied medics, Julia risks everything to rescue Jewish Italians from the deadly clutches of the Holocaust.

1997. Amy Novak has lost the two great loves in her life: her husband, Michael, and her first love, music. With the first anniversary of Michael's death approaching, Amy buries herself in her job as an archivist. And when a newly declassified file lands on her desk, she is astonished to uncover proof that Agent 'Colette' existed—a name spoken only in whispers; an identity so secret that it has never been verified.

In enemy-occupied Paris, as the locals go to bed starving and defeated by the war, music and laughter spills through the door of a little restaurant, crowded with German soldiers. The owner, Marianne, moves on weary feet between its packed tables, carrying plates of steaming, wholesome food for the enemy officers. Her smile is bright and sparkling, her welcome cordial. Nobody would guess the hatred she hides in her heart. That night, the restaurant closes its doors for the final time.

When Jeanne uncovers a dusty old box in her father’s garage, her world as she knows it is turned upside down. She has inherited a bookstore in a tiny French village, just outside of Paris, from a mysterious woman named Laurence. Traveling to France to search for answers about the woman her father has kept a secret for years, Jeanne finds the store boarded up, in complete disrepair. Inside, she finds a tiny silver pendant hidden beneath the blackened, scorched floorboards. As Jeanne pieces together Laurence’s incredible story, she discovers a woman whose bravery knew no bounds.

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. 

Nazi-occupied Vienna, 1940. As bombs fall over Europe, Hannah Stern is a 27-year-old nurse who is just trying to survive. When she takes a position at Vienna’s esteemed psychiatric hospital, Am Steinhof, she thinks it will take her away from the danger. Her estranged half-brother has arranged the job for her on the condition that she must take his son, Willi, there too. He insists it’s a place where Willi will be safe. And Hannah soon forms a close bond with the sweet, fragile child in her care.

Germany, 1939: Annaliese is a doctor’s wife, living in an elegant grey stone house with ivy creeping over the balcony. But when her husband is ordered to work at the Dachau labor camp, her ordinary life is turned upside down by the horrors of war. And Annaliese finds herself in grave danger when she dares to fight for love and freedom. America, 1989: Turning the pages of the newspaper, Annaliese gasps when she recognizes the face of a man she thought she’d never see again....

London 1940. As the war rages in Europe, Rose Brown steps on board a ship bound for America, hoping to escape the danger. She's frightened, but her widowed mammy and three sisters in Ireland need the money she earns as nanny to the rich Townsend family. But while Rose plays with baby Sarah in the salty spray on deck, disaster strikes, and the ocean liner begins to sink. In the chaos, Rose and the baby are separated from the family.

Paris, 1940, a city under German occupation. A young Jewish girl, Judith, meets a young man, Christian. But he is the son of a wealthy banker and Nazi sympathizer—his family will never approve of the girl he has fallen in love with. As the Germans impose more and more restrictions on Jewish Parisians, the couple secretly plan to flee the country. But before they can make their escape, Judith disappears.

July, 1940. Blitz-ridden London: Marnie Fern’s life is torn apart when her grandfather is killed in an air raid. But once she discovers that he’d been working undercover as a radio operative – or pianist – for the Dutch resistance, Marnie knows she must complete his mission – no matter the cost. Nazi-occupied Amsterdam: At the other end of the wireless, fellow pianist Corrie Bakker is caught in a dangerous game of cat-and-mouse as she desperately tries to keep her loved ones out of the line of fire – even if it means sacrificing herself.

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.

Germany, 1939. A tumbledown farmhouse, on the outskirts of a close-knit village in the heart of the rolling hills of Bavaria. A once happy family home torn apart by Nazi rule. And one young girl who refuses to give up on what she believes in...London, 2018: When 94-year-old Imogen receives a letter addressed to her in neat, unfamiliar handwriting, she notices the postmark is stamped from Germany - and it sends shivers down her spine.... 

Berlin, 1941: Margarete Rosenbaum is working as a housemaid for a senior Nazi officer when his house is bombed, leaving her the only survivor. But when she’s mistaken for his daughter in the aftermath of the blast, Margarete knows she can make a bid for freedom.... Issued with temporary papers - and with the freedom of not being seen as Jewish - a few hours are all she needs to escape to relative safety. That is, until her former employer’s son, SS officer Wilhelm Huber, tracks her down. 

Italy, 1945. "Where am I"? The young man wakes, bewildered. He sees olive trees against a bright blue sky. A soft voice soothes him. "We saw you fall from your plane. The parachute saved you". He remembers nothing of his life, or the war that has torn the world apart...but where does he belong? England, present day. Antique-shop-owner Susannah wipes away a tear as she tidies her grandmother’s belongings. Elsie’s memories are fading, and every day Susannah feels further away from her only remaining family.

Londoner Madeleine Grant is studying at the Sorbonne in Paris when she marries charismatic French journalist Giles Martin. As they raise their son, Olivier, they hold on to a tenuous promise for the future. Until the thunder of war sets off alarms in France. Staying behind to join the resistance, Giles sends Madeleine and Olivier to the relative safety of England, where Madeleine secures a job teaching French at a secondary school. Yet nowhere is safe. After a devastating twist of fate resulting in the loss of her son, Madeleine accepts a request from the ministry to aid in the war effort.