London, 1940. Emmeline Lake is Doing Her Bit for the war effort, volunteering as a telephone operator with the Auxiliary Fire Services. When Emmy sees an advertisement for a job at the London Evening Chronicle, her dreams of becoming a Lady War Correspondent suddenly seem achievable. But the job turns out to be working as a typist for the fierce and renowned advice columnist Henrietta Bird. Emmy is disappointed but gamely bucks up and buckles down.

Carmel, a forty year old Irish woman is living a life that’s fine, not exciting or awful, just fine. She has a house, a husband, it’s all ok. She never had kids, but that’s just life, right? She knows she should be grateful. She’s better off than a lot of people. Then one day, out of the blue, she gets a Facebook message, from a total stranger. With information that could transform her life, for better or for much worse.

When Elizabeth drops her beloved only daughter off at college, she holds back the tears…fighting her worries about an empty nest with the thought of all the adventures that she and her husband Joel can now enjoy together. But as soon as they sit down to eat dinner that evening, Joel drops a bombshell. He wants a break. Searching for an escape, Elizabeth discovers an apartment in Rome that is only available for three months rental to ‘an English woman of a certain age’.

Hours later, the man’s cold body lies in the city mortuary, alongside the woman he couldn’t save. And his sister, unconventional nurse Gemma Tate, tracks down troubled police inspector Sebastian Bell to unravel the truth. Sebastian has enough pressure to solve the murder of an aristocratic heiress without Gemma meddling in his case. But the cryptic sentences she brings him from her brother’s notebook could be a crucial lead. If only they knew what “milky way” meant.

Paris, 1944: The war is nearly over, but for members of the Resistance in occupied France, it is more dangerous than ever before. Twenty-five-year-old Gabby Foucher loathes the Nazis, though as the concierge of 10 rue Royale, she does her best to avoid conflict - unlike her bolder sister Yvette, who finds trouble at every turn.

London, 1923. Newly minted research assistant Saffron Everleigh is the first woman to hold the position at University College of London. When she attends a dinner party for the school, she expects to engage in conversations about the university's large expedition to the Amazon. What she doesn’t expect is for Mrs. Henry, one of the professors’ wives, to drop to the floor, poisoned by an unknown toxin. Dr. Maxwell, Saffron’s mentor, is the main suspect, and evidence quickly mounts.

Paris, 1943. The scent of fresh baguettes hangs in the air as Coralie unbolts the door to her bakery with trembling fingers. She must get out of the city. Hiding her precious leather recipe book inside her coat, she promises never to let the secret locations of the people she worked tirelessly to save fall into German hands… Present day. Raven is unhappy about being shipped off to the other side of the country for the summer to stay with the mysterious French grandmother she barely knows.

As the war begins, Hanna Rombauer, a young German woman, is sent to live with her aunt and uncle after her mother’s death. Thrown into a life of luxury she never expected, Hanna soon finds herself unwillingly matched with an SS officer twenty years her senior. The independence that her mother lovingly fostered in her is considered highly inappropriate as the future wife of an up-and-coming officer and she is sent to a “bride school.” There, in a posh villa on the outskirts of town, Hanna is taught how to be a “proper” German wife.

September 1, 1939: Sixty-year-old Janusz Korczak and the students and teachers at his Dom Sierot Jewish orphanage are outside enjoying a beautiful day in Warsaw. Hours later, their lives are altered forever when the Nazis invade. Suddenly treated as an outcast in his own city, Janusz--a respected leader known for his heroism and teaching--is determined to do whatever it takes to protect the children from the horrors to come.

Spring 1946: Best friends Vera Frankel and Edith Ban arrive in Naples. Refugees from Hungary, they managed to escape from a train headed for Auschwitz and spent the rest of the war hiding on an Austrian farm. Now, the two young women are starting new lives abroad. Armed with a letter of recommendation from an American officer, Vera finds work at the United States embassy where she falls in love with Captain Anton Wight. But as Vera and Edith grapple with the aftermath of the war, so too does Anton, and when he suddenly disappears, Vera is forced to change course.