Joe Tournier has a bad case of amnesia. His first memory is of stepping off a train in the 19th-century French colony of England. The only clue Joe has about his identity is a century-old postcard of a Scottish lighthouse that arrives in London the same month he does. Written in illegal English - instead of French - the postcard is signed only with the letter 'M', but Joe is certain whoever wrote it knows him far better than he currently knows himself and he’s determined to find the writer.

In 1963, in a Siberian prison, former nuclear specialist Valery Kolkhanov has mastered what it takes to survive: the right connections to the guards for access to food and cigarettes, the right pair of warm boots, and the right attitude toward the small pleasures of life so he won’t go insane. But one day, all that changes: Valery’s university mentor steps in and sweeps him from the frozen camp to a mysterious unnamed city. It houses a set of nuclear reactors, and surrounding it is a forest so damaged it looks like the trees have rusted from within.

Raised in a Greek legion, Phaidros has been taught to follow his commander’s orders at all costs. But when Phaidros rescues a baby from a fire at Thebes’s palace, his commander’s orders cease to make sense: Phaidros is forced to abandon the blue-eyed boy at a temple, and to keep the baby’s existence a total secret. Years later, struggling with panic attacks and flashbacks, Phaidros is enlisted by the Queen to find her son, Thebes’ young crown prince, who has vanished to escape an arranged marriage.

In the wake of an environmental catastrophe, January, once a principal in London's Royal Ballet, has become a refugee in Tharsis, the terraformed colony on Mars. There, January’s life is dictated by his status as an Earthstronger—a person whose body is not adjusted to lower gravity and so poses a danger to those born on, or naturalized to, Mars. January’s job choices, housing, and even transportation are dictated by this second-class status, and now a xenophobic politician named Aubrey Gale is running on a platform that would make it all worse.

When Phoebe, goddess of the moon, is killed by the knights of the sun god, Hyperion, all who follow her are branded heretics. With Phoebe gone, the souls of the dead are no longer ferried to the underworld, and instead linger on as shades who feast on the blood of the living. Raef is a child of the night. He lives in the shadows, on scraps, eking out a meager existence as a thief. But when an ornate box is sequestered in the Temple of Hyperion, the chance of a big score proves too great to resist. What he finds within propels him on an odyssey across the sea and back again.

He is a broken, wild thing, his heart’s nature exposed by his beastly form. Long ago cursed with a wretched existence, the Beast prowls the dusty hallways of his ruined château with only magical, unseen servants to keep him company - until a weary traveler disturbs his isolation. Bewitched by the man’s dreams of his beautiful daughter, the Beast devises a plan to lure her to the château. There, Isabeau courageously exchanges her father’s life for her own and agrees to remain with the Beast for a year.

Bennett Sharp is on the run. Wanted for piracy, she fears neither God nor death nor man. Except Priest Farrell.

Gav isn't really sure how he ended up with a castle full of goblins, or why he has a princess locked in a cell. All he can do is play along with his own evil plan in hopes of getting his memories back before he gets himself killed. But as he realizes that nothing—from the incredibly tasteless cloak adorned with flames to the aforementioned princess—is quite what it seems, Gav must face up to all the things the Dread Lord Gavrax has done. And he'll have to answer the hardest question of all—who does he want to be?

After more than 500 years of exile, the heir to the empyre is wary about his sudden reassignment to active duty on the Goblin War’s front lines. His mission to rescue an outpost leads to a dead-end canyon deep inside enemy territory, and his suspicion turns to dread when he discovers the stronghold doesn't exist.

At birth, Violet and Rose Flowers were identical, save for a tiny bluish-purple mark gracing Violet’s slender neck. By nineteen, their temperaments distinguish them, as different as the flowers their mother named them for—Violet, wild and outgoing, and Rose, solitary and reserved. Still, they are each other’s world. Then, on a sweltering, terrible August night in 1928, an explosion rocks Lamb’s Dance Hall in Possum Flats, Missouri, engulfing it in flames, leaving one twin among the dozens dead, and her sister’s life forever changed.

Piranesi lives in the House. Perhaps he always has. In his notebooks, day after day, he makes a clear and careful record of its wonders: the labyrinth of halls, the thousands upon thousands of statues, the tides that thunder up staircases, the clouds that move in slow procession through the upper halls. On Tuesdays and Fridays Piranesi sees his friend, the Other. At other times he brings tributes of food to the Dead. But mostly, he is alone.

Multiverse travel is finally possible, but there’s just one catch: No one can visit a world where their counterpart is still alive. Enter Cara, whose parallel selves happen to be exceptionally good at dying—from disease, turf wars, or vendettas they couldn’t outrun. Cara’s life has been cut short on 372 worlds in total. On this dystopian Earth, however, Cara has survived. Identified as an outlier and therefore a perfect candidate for multiverse travel, Cara is plucked from the dirt of the wastelands.

In a sprawling mansion filled with peculiar treasures, January Scaller is a curiosity herself. As the ward of the wealthy Mr. Locke, she feels little different from the artifacts that decorate the halls: carefully maintained, largely ignored, and utterly out of place. Then she finds a strange book. A book that carries the scent of other worlds and tells a tale of secret doors, of love, adventure, and danger. Each page turn reveals impossible truths about the world, and January discovers a story increasingly entwined with her own.

At the dawn of the twentieth century in Paris, Samantha Harker, daughter of Dracula's killer, works as a researcher for the Royal Society for the Study of Abnormal Phenomena. But no one realizes how abnormal she is. Sam is a channel into the minds of monsters: a power that could help her solve the gruesome deaths plaguing turn-of-the-century Paris—or have her thrown into an asylum.

In the house of Helios, god of the sun and mightiest of the Titans, a daughter is born. But Circe is a strange child—not powerful, like her father, nor viciously alluring like her mother. Turning to the world of mortals for companionship, she discovers that she does possess power—the power of witchcraft, which can transform rivals into monsters and menace the gods themselves.