Velasin vin Aaro never planned to marry at all, let alone a girl from neighboring Tithena. When an ugly confrontation reveals his preference for men, Vel fears he’s ruined the diplomatic union before it can even begin. But while his family is ready to disown him, the Tithenai envoy has a different solution: for Vel to marry his former intended’s brother instead.

Sixteen-year-old dock boy Will is on the run, pursued by the men who killed his mother. Then an old servant tells him of his destiny to fight beside the Stewards, who have sworn to protect humanity if the Dark King ever returns. Will is thrust into a world of magic, where he starts training for a vital role in the oncoming battle against the Dark. As London is threatened and old enmities are awakened, Will must stand with the last heroes of the Light to prevent the fate that destroyed their world from returning to destroy his own.

Avra Helvaçi, former field agent of the Arasti Ministry of Intelligence, has accidentally stolen the single most expensive secret in the world—and the only place to flee with a secret that big is the open sea. To find a buyer with deep enough pockets, Avra must ask for help from his on-again, off-again ex, the pirate Captain Teveri az-Haffar. They are far from happy to see him, but together, they hatch a plan: take the information to the isolated pirate republic of the Isles of Lost Souls, fence it, profit.

Cambridge professor Emily Wilde is good at many things: She is the foremost expert on the study of faeries. She is a genius scholar and a meticulous researcher who is writing the world’s first encyclopaedia of faerie lore. But Emily Wilde is not good at people. She could never make small talk at a party—or even get invited to one. And she prefers the company of her books, her dog, Shadow, and the Fair Folk to other people. So when she arrives in the hardscrabble village of Hrafnsvik, Emily has no intention of befriending the gruff townsfolk.

Linus Baker is a by-the-book case worker in the Department in Charge of Magical Youth. He's tasked with determining whether six dangerous magical children are likely to bring about the end of the world. Arthur Parnassus is the master of the orphanage. He would do anything to keep the children safe, even if it means the world will burn. And his secrets will come to light.