In her twenties, Belle da Costa Greene is hired by J. P. Morgan to curate a collection of rare manuscripts, books, and artwork for his newly built Pierpont Morgan Library. Belle becomes a fixture in New York City society and one of the most powerful people in the art and book world, known for her impeccable taste and shrewd negotiating for critical works as she helps create a world-class collection.

Mitza Maric has always been a little different from other girls. Most 20-year-olds are wives by now, not studying physics at an elite Zurich university with only male students trying to outdo her clever calculations. But Mitza is smart enough to know that, for her, math is an easier path than marriage. And then fellow student Albert Einstein takes an interest in her, and the world turns sideways. Theirs becomes a partnership of the mind and of the heart, but there might not be room for more than one genius in a marriage.

Clara Kelley is not who they think she is. She's not the experienced Irish maid who was hired to work in one of Pittsburgh's grandest households. She's a poor farmer's daughter with nowhere to go and nothing in her pockets. But the other woman with the same name has vanished, and pretending to be her just might get Clara some money to send back home.

Her beauty almost certainly saved her from the rising Nazi party and led to marriage with an Austrian arms dealer. Underestimated in everything else, she overheard the Third Reich's plans while at her husband's side, understanding more than anyone would guess. She devised a plan to flee in disguise from their castle, and the whirlwind escape landed her in Hollywood. She became Hedy Lamarr, screen star.

Mrs. Post, the President and First Lady are here to see you. . . . So begins another average evening for Marjorie Merriweather Post. Presidents have come and gone, but she has hosted them all. Growing up in the modest farmlands of Battle Creek, Michigan, Marjorie was inspired by a few simple rules: always think for yourself, never take success for granted, and work hard—even when deemed American royalty, even while covered in imperial diamonds.

Between the World Wars, the six Mitford sisters—each more beautiful, brilliant, and eccentric than the next—dominate the English political, literary, and social scenes. Though they've weathered scandals before, the family falls into disarray when Diana divorces her wealthy husband to marry a fascist leader and Unity follows her sister's lead all the way to Munich, inciting rumors that she's become Hitler's mistress.

In December 1926, Agatha Christie goes missing. Investigators find her empty car on the edge of a deep, gloomy pond, the only clues some tire tracks nearby and a fur coat left in the car - strange for a frigid night. Her World War I veteran husband and her daughter have no knowledge of her whereabouts, and England unleashes an unprecedented manhunt to find the up-and-coming mystery author. Eleven days later, she reappears, just as mysteriously as she disappeared, claiming amnesia and providing no explanations for her time away.

Berlin, 1930—When a wave of change sweeps a radical political party to power, Sofie von Meyer Rhodes’s academic husband benefits from the ambitions of its newly elected chancellor. Although Sofie and Jürgen do not share the social views growing popular in Hitler’s Germany, Jürgen’s position with its burgeoning rocket program changes their diminishing fortunes for the better. But as Sofie watches helplessly, her beloved Berlin begins to transform, forcing her to consider what they must sacrifice morally for their young family’s security, and what the price for their neutrality will be.

Tuscany, 1944: As Allied troops advance and bombs fall around deserted villages, a young English soldier, Ulysses Temper, finds himself in the wine cellar of a deserted villa. There, he has a chance encounter with Evelyn Skinner, a middle-aged art historian who has come to Italy to salvage paintings from the ruins and recall long-forgotten memories of her own youth. In each other, Ulysses and Evelyn find a kindred spirit amidst the rubble of war-torn Italy, and set off on a course of events that will shape Ulysses's life for the next four decades.

Yasmin Ghorami is 26, in training to be a doctor (like her Indian-born father), and engaged to the charismatic, upper-class Joe Sangster, whose formidable mother, Harriet, is a famous feminist. The gulf between families is vast. So, too, is the gulf in sexual experience between Yasmin and Joe. As the wedding day draws near, misunderstandings, infidelities, and long-held secrets upend both Yasmin’s relationship and that of her parents, a “love marriage”, according to the family lore that Yasmin has believed all her life.