The vibrant, sprawling saga of Empress Maria Theresa - one of the most renowned women rulers in history - and three of her extraordinary daughters, including Marie Antoinette, the doomed queen of France.

England, 1939: The Penrose sisters couldn't be more different. Skye is a daring and brash pilot, and Liberty is the one to defy her at every turn. Even if women aren't allowed in the Royal Air Force, Skye is determined to help the war effort. She's thrilled when it reunites her with her childhood soul mate, Nicholas. She's less thrilled to learn Nicholas is now engaged to an enigmatic Frenchwoman named Margaux Jourdan.

When the new deputy librarian, Juliet Lansdown, finds that Bethnal Green Library isn’t the bustling hub she is expecting, she becomes determined to breathe life back into it. But can she show the men in charge that a woman is up to the task of running the library, especially when a confrontation with her past threatens to derail her?

England, 1835. London is awash with thrilling new ingredients, from rare spices to exotic fruits. But no one knows how to use them. When Eliza Acton is told by her publisher to write a cookery book instead of the poetry she loves, she refuses - until her bankrupt father is forced to flee the country. As a woman, Eliza has few options. Although she’s never set foot in a kitchen, she begins collecting recipes and teaching herself to cook. Much to her surprise, she discovers a talent - and a passion - for the culinary arts.

Twenty-five years after the end of the war, Noah Ainsworth is still preoccupied with those perilous, exhilarating years as a British SOE operative in France. A head injury sustained on his final operation has caused frustrating gaps in his memory—in particular about the agent who saved his life during that mission gone wrong, whose real name he never knew, nor whether she even survived the war.

After Grand-mere Ursule gives her life to save her family, their magic seems to die with her. Even so, the Orchires fight to keep the old ways alive, practicing half-remembered spells and arcane rites in hopes of a revival. And when their youngest daughter comes of age, magic flows anew. The lineage continues, though new generations struggle not only to master their power, but also to keep it hidden. But when World War II looms on the horizon, magic is needed more urgently than ever.

Rose Winton wants nothing more than to work with her father, eminent naturalist Charles Winton, on his groundbreaking study of the platypus. Not only does she love him with all her heart, but the discoveries they have made could turn the scientific world on its head. When Charles is unable to make the long sea journey to present his findings to the prestigious Royal Society in England, Rose must venture forth in his stead. What she discovers there will change the lives of future generations.

Paris, 1939. Maison Chanel has closed, thrusting haute couture dressmaker Lila de Laurent out of the world of high fashion as Nazi soldiers invade the streets and the City of Lights slips into darkness. Lila’s life is now a series of rations, brutal restrictions, and carefully controlled propaganda while Paris is cut off from the rest of the world. Yet in hidden corners of the city, the faithful pledge to resist. Lila is drawn to La Resistance and is soon using her skills as a dressmaker to infiltrate the Nazi elite.

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.

On a freezing night in January 1941, a little Jewish girl is found on the steps of an apartment building in Bucharest. With Romania recently allied with the Nazis, the Jewish population is in grave danger, undergoing increasingly violent persecution. The girl is placed in an orphanage and eventually adopted by a wealthy, childless couple who name her Natalia. As she assimilates into her new life, she all but forgets the parents who were forced to leave her behind. They are even further from her mind when Romania falls under Soviet occupation.

In Nottingham, England, widow Emma Taylor finds herself in desperate need of a job. She and her beloved daughter Olivia have always managed just fine on their own, but with the legal restrictions prohibiting widows with children from most employment opportunities, she’s left with only one option: persuading the manageress at Boots’ Booklover’s Library to take a chance on her with a job.

In 1947, photographer and war correspondent Janey Everett arrives at a remote surfing village on the Hawaiian island of Kauai to research a planned biography of forgotten aviation pioneer Sam Mallory, who joined the loyalist forces in the Spanish Civil War and never returned. Obsessed with Sam’s fate, Janey has tracked down Irene Lindquist, the owner of a local island-hopping airline, whom she believes might actually be the legendary Irene Foster, Mallory’s onetime student and flying partner.

Growing up in New York City in the 1910s, Luella and Effie Tildon realize that even as wealthy young women, their freedoms come with limits. But when the sisters discover a shocking secret about their father, Luella, the brazen elder sister, becomes emboldened to do as she pleases. Her rebellion comes with consequences, and one morning Luella is mysteriously gone.

It is 1914, and as the war draws the young men of Britain away to fight, women must keep the nation running. Two of those women are Peggy and Maude, twin sisters who live on a narrowboat in Oxford and work in the bindery at the university press.

During the languid days of the Christmas break, a group of 30-something friends from Oxford meets to welcome in the New Year together, a tradition they began as students 10 years ago. For this vacation, they’ve chosen an idyllic and isolated estate in the Scottish Highlands - the perfect place to get away and unwind by themselves. They arrive on December 30, just before a historic blizzard seals the lodge off from the outside world. Two days later, on New Year’s Day, one of them is dead.