In modern-day Manhattan where we lay our scene, two rival witch families fight to maintain control of their respective criminal empires. On one side of the conflict are the Antonova sisters—each one beautiful, cunning, and ruthless—and their mother, the elusive supplier of premium intoxicants, known only as Baba Yaga.

The Alexandrian Society, caretakers of lost knowledge from the greatest civilizations of antiquity, are the foremost secret society of magical academicians in the world. Those who earn a place among the Alexandrians will secure a life of wealth, power, and prestige beyond their wildest dreams, and each decade, only the six most uniquely talented magicians are selected to be considered for initiation. Enter the latest round of six: Libby Rhodes and Nico de Varona, unwilling halves of an unfathomable whole, who exert uncanny control over every element of physicality.

Once, there were four worlds, nestled like pages in a book, each pulsing with fantastical power and connected by a single city: London. Until the magic grew too fast and forced the worlds to seal the doors between them in a desperate gamble to protect their own. The few magicians who could still open the doors grew more rare as time passed and now, only three Antari are known in recent memory—Kell Maresh of Red London, Delilah Bard of Grey London, and Holland Vosijk, of White London.

In a kingdom where magic has been lost, Fia is a rare changeling, left behind by the wicked Fair Folk when they stole the High Queen's daughter and retreated behind the locked gates of Tír na nÓg. Most despise Fia's fae blood. But the queen raises her as a daughter and trains her to be a spy. Meanwhile, the real princess Eala is bound to Tír na nÓg, cursed to become a swan by day and only returning to her true form at night. When a hidden gate to the realm is discovered, Fia is tasked by the queen to retrieve the princess and break her curse.

Effy Sayre has always believed in fairy tales. Haunted by visions of the Fairy King since childhood, she’s had no choice. Her tattered copy of Angharad—Emrys Myrddin’s epic about a mortal girl who falls in love with the Fairy King, then destroys him—is the only thing keeping her afloat. So when Myrddin’s family announces a contest to redesign the late author’s estate, Effy feels certain it’s her destiny. But musty, decrepit Hiraeth Manor is an impossible task, and its residents are far from welcoming.

In a shabby house, on a shabby street, in the new capital of Madrid, Luzia Cotado uses scraps of magic to get through her days of endless toil as a scullion. But when her scheming mistress discovers the lump of a servant cowering in the kitchen is actually hiding a talent for little miracles, she demands Luzia use those gifts to improve the family's social position.

Long ago, humans betrayed dragons, stealing their magic and banishing them to a dying world. Centuries later, their descendants worship dragons as gods—but the gods remember, and they do not forgive. Thief Arcady scrapes a living on the streets of Vatra. Desperate, Arcady steals a powerful artifact from the bones of the Plaguebringer, the most hated person in Lumet history. Only Arcady knows that the artifact's magic holds the key to a new life among the nobles at court and a chance for revenge.

Pain is Dymitr’s calling. His family is one in a long line of hunters who sacrifice their souls to slay monsters. Now he’s tasked with a deadly mission: find the legendary witch Baba Jaga. To reach her, Dymitr must ally with the ones he’s sworn to kill. Pain is Ala’s inheritance. A fear-eating zmora with little left to lose, Ala awaits death from the curse she carries. When Dymitr offers her a cure in exchange for her help, she has no choice but to agree.

Every year, thousands in the kingdom of Talin flock to its capital twin cities, San-Er, where the palace hosts a set of games. For those confident enough in their ability to jump between bodies, competitors across San-Er fight to the death to win unimaginable riches. Princess Calla Tuoleimi lurks in hiding. Five years ago, a massacre killed her parents and left the palace of Er empty…and she was the one who did it. Before King Kasa’s forces in San can catch her, she plans to finish the job and bring down the monarchy.

The Four Realms—Life, Death, Light, and Darkness—all converge on the city of dusk. But the gods have withdrawn their favor from the once thriving and vibrant metropolis. And without it, all the realms are dying. Unwilling to stand by and watch the destruction, the four heirs to divine power—Angelica, an elementalist with her eyes set on the throne; Risha, a necromancer fighting to keep the peace; Nikolas, a soldier who struggles to see the light; and Taesia, a shadow-wielding rogue with a reckless heart—will become reluctant allies in the quest to save their city.