Summer, 1940. Nineteen-year-old Jakob Novis and his quirky younger sister Lizzie share a love of riddles and puzzles. And now they’re living inside of one. The quarrelsome siblings find themselves amidst one of the greatest secrets of World War II—Britain’s eccentric codebreaking factory at Bletchley Park. As Jakob joins Bletchley’s top minds to crack the Nazi's Enigma cipher, fourteen-year-old Lizzie embarks on a mission to solve the mysterious disappearance of their mother.

Hope Smith can't stand rich people—the dictionary magnate family the Wintertons most of all. Not since she and her twin brother, Gordon, learned that their dad was one. So when Gordon enters the family into the Winterton’s charity spelling bee, Hope wants nothing to do with it. But with their mom losing her job and the family facing eviction from the motel where they live, they desperately need the money, and it looks like Hope doesn’t have much of a choice.

When seventeen-year-old Bailey starts a new job at a hotel waterpark, she is less than thrilled to see an old acquaintance is one of her coworkers. Bailey met Charlie a year ago on the long flight to Omaha, where she moved after her parents’ divorce. Charlie’s cynicism didn’t mix well with Bailey’s carefully well-behaved temperament, and his endless commentary was the irritating cherry on top of an already emotionally fraught trip. Now, Bailey and Charlie are still polar opposites, but instead of everything about him rubbing Bailey the wrong way, she starts to look forward to hanging out.

December 6, 1941: Best friends Frank and Stanley have it good. Their dads are Navy pilots stationed at Pearl Harbor in Hawaii, and the boys get a front-row view of the huge battleships and the sparkling water. Yes, World War II is raging in Europe and in Asia, but the US isn't involved in the war, and the boys are free to dream about becoming comic book creators. They've even invented a superhero of their own, in the style of Batman, Superman, Captain America, and other stars of the Golden Age of Comics. December 7th, 1941: Everything explodes.

Bolivian-Argentinian Inez Olivera belongs to the glittering upper society of nineteenth century Buenos Aires, and like the rest of the world, the town is steeped in old world magic that’s been largely left behind or forgotten. Inez has everything a girl might want, except for the one thing she yearns the most: her globetrotting parents—who frequently leave her behind.

All Samantha wanted was to move back to New York and pursue her music, which was difficult enough being a Chinese girl in Missouri, 1849. Then her fate takes a turn for the worse after a tragic accident leaves her with nothing and she breaks the law in self-defense. With help from Annamae, a runaway slave she met at the scene of her crime, the two flee town for the unknown frontier. But life on the Oregon Trail is unsafe for two girls.

Valora Luck has two things: a ticket for the biggest and most luxurious ocean liner in the world, and a dream of leaving England behind and making a life for herself as a circus performer in New York. Much to her surprise though, she's turned away at the gangway; apparently, Chinese aren't allowed into America. But Val has to get on that ship. Her twin brother, Jamie, who has spent two long years at sea, is there, as is an influential circus owner, whom Val hopes to audition for. Thankfully, there's not much a trained acrobat like Val can't overcome when she puts her mind to it.

In a world where Saints are monsters and Wonderland is the dark forest where they lurk, it’s been five years since young witches and lovers Caro Rabbit and Iccadora Alice Sickle were both sentenced to that forest for a crime they didn’t commit—and four years since they shattered one another’s hearts, each willing to sacrifice the other for a chance at freedom. Now, Caro is a successful royal Saint-harvester, living the high life in the glittering capital and pretending not to know of the twisted monster experiments that her beloved Red Queen hides deep in the bowels of the palace.

San Francisco, 1906: Fifteen-year-old Mercy Wong is determined to break from the poverty of Chinatown, and an education at St. Clare’s School for Girls is her best hope. Although St. Clare’s is off-limits to all but the wealthiest white girls, Mercy gains admittance through a mix of cunning and a little bribery, only to discover that getting in was the easiest part. Not to be undone by a bunch of spoiled heiresses, Mercy stands strong—until disaster strikes.

Xue, a talented young musician, has no past and probably no future. Orphaned at a young age, her kindly poet uncle took her in and arranged for an apprenticeship at one of the most esteemed entertainment houses in the kingdom. She doesn’t remember much from before entering the House of Flowing Water, and when her uncle is suddenly killed in a bandit attack, she is devastated to lose her last connection to a life outside of her indenture contract.

Liv Whitlock desperately needs to change the trajectory of her life . . . so she steals her perfect sister’s identity. Liv starts to rewrite her story, winning a prestigious internship on a movie set filming in Alaska, and finds herself on a luxury yacht alongside pop star Paris Grace, actress sisters Effie and Miri Knight, Olympic gymnast Rosalind Torres, and social media influencer Celia Jones. Liv tries to find common ground with her famous companions, but just as the group starts to bond, a violent storm wrecks their vessel, stranding them on an island in the North Pacific Ocean.

Stonebridge High’s resident bad boy, Wesley “Big Mac” Mackenzie, is failing senior year—thanks to his unchecked anger, rowdy friends, and a tendency to ditch his homework for skateboarding and a secret photography obsession. So when his mom drags him to a production of The Nutcracker, Wes isn’t interested at all … until he sees Tristan Monroe. Mr. Nutcracker himself. Wes knows he shouldn’t like Tristan; after all, he’s a ballet dancer, and Wes is as closeted as they come. But when they start spending time together, Wes can’t seem to get Tristan out of his head.

Jasmyn and King Williams move their family to the planned Black utopia of Liberty, California hoping to find a community of like-minded people, a place where their growing family can thrive. King settles in at once, embracing the Liberty ethos, including the luxe wellness center at the top of the hill, which proves to be the heart of the community. But Jasmyn struggles to find her place. She expected to find liberals and social justice activists striving for racial equality, but Liberty residents seem more focused on booking spa treatments and ignoring the world’s troubles.

Enclosed under a vast dome, Snowglobe is the last place on Earth that’s warm. Outside Snowglobe is a frozen wasteland, and every day, citizens face the icy world to get to their jobs at the power plant, where they produce the energy Snowglobe needs. Their only solace comes in the form of twenty-four-hour television programming streamed directly from the domed city.

Growing up in the Kegari slums, AIZ has seen her share of suffering. An old tragedy fuels her need for vengeance, but it is love of her people that propels her. Until one hotheaded mistake lands her in an inescapable prison, where the embers of her wrath ignite. Banished from her people for an unforgivable crime, SIRSHA is a down-on-her-luck tracker who uses magic to trace her marks. Destitute, she agrees to hunt down a killer who has murdered children across the Martial Empire