A curmudgeonly professor journeys to a small town in the far north to study faerie folklore and discovers dark fae magic, friendship, and love in the start of a heartwarming and enchanting new fantasy series. 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, and the Fair Folk. So when she arrives in the hardscrabble village of Hrafnsvik, Emily has no intention of befriending the gruff townsfolk. Nor does she care to spend time with another new arrival: her dashing and insufferably handsome academic rival Wendell Bambleby, who manages to charm the townsfolk, get in the middle of Emily's research, and utterly confound and frustrate her. But as Emily gets closer and closer to uncovering the secrets of the Hidden Ones--the most elusive of all faeries--lurking in the shadowy forest outside the town, she also finds herself on the trail of another mystery: Who is Wendell Bambleby, and what does he really want? To find the answer, she'll have to unlock the greatest mystery of all--her own heart.

From the New York Times bestselling author of Ninth House, Hell Bent, and creator of the Grishaverse series comes a highly anticipated historical fantasy set during the Spanish Golden Age 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 better the family's social position. What begins as simple amusement for the bored nobility takes a perilous turn when Luzia garners the notice of Antonio Pérez, the disgraced secretary to Spain's king. Still reeling from the defeat of his armada, the king is desperate for any advantage in the war against England's heretic queen—and Pérez will stop at nothing to regain the king's favor. Determined to seize this one chance to better her fortunes, Luzia plunges into a world of seers and alchemists, holy men and hucksters, where the line between magic, science, and fraud is never certain. But as her notoriety grows, so does the danger that her Jewish blood will doom her to the Inquisition's wrath. She will have to use every bit of her wit and will to survive—even if that means enlisting the help of Guillén Santangel, an embittered immortal familiar whose own secrets could prove deadly for them both.