Deadly storms have ravaged Mina’s homeland for generations. Floods sweep away entire villages, while bloody wars are waged over the few remaining resources. Her people believe the Sea God, once their protector, now curses them with death and despair. In an attempt to appease him, each year a beautiful maiden is thrown into the sea to serve as the Sea God’s bride, in the hopes that one day the “true bride” will be chosen and end the suffering.

As one of the few witches in Britain, Mika Moon knows she has to hide her magic, keep her head down, and stay away from other witches so their powers don’t mingle and draw attention. And as an orphan who lost her parents at a young age and was raised by strangers, she’s used to being alone and she follows the rules...with one exception: an online account, where she posts videos "pretending" to be a witch. She thinks no one will take it seriously.

Eight years have passed since the Battle of the Serpent. But in the icy north, Lady Nore of the Court of Teeth has reclaimed the Ice Needle Citadel. There, she is using an ancient relic to create monsters of stick and snow who will do her bidding and exact her revenge. Suren, child queen of the Court of Teeth, and the one person with power over her mother, fled to the human world. There, she lives feral in the woods. Lonely, and still haunted by the merciless torments she endured in the Court of Teeth, she bides her time by releasing mortals from foolish bargains.

Ever since she was cursed by a faerie, Theodora Ettings has had no sense of fear or embarrassment—an unfortunate condition that leaves her prone to accidental scandal. Dora hopes to be a quiet, sensible wallflower during the London Season—but when Elias Wilder, the strange, handsome, and utterly ill-mannered Lord Sorcier, discovers her condition, she is instead drawn into peculiar and dangerous faerie affairs.

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.