#1 International Bestseller! "Dark and dangerous and teeming with romance." ―Rachel Gillig, New York Times bestselling author of Two Twisted Crowns "Luxuriantly poetic [and] extravagantly sexy" — Shelf Awareness Set in a world of perilous magic and moonlit forests, this seductive romantic fantasy debut tells the story of a defiant changeling, her cursed sister, and the dangerous fae lord she must defeat to save her family. 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, Eala, and retreated behind the locked gates of the Folk realm. Rather than leave Fia an outcast, the queen takes her in and trains her to be a spy. When a hidden gate to the realm is discovered, Fia is tasked by the queen to retrieve the princess and break her curse. Accompanying Fia is Prince Rogan, her dearest childhood friend—and Eala’s betrothed. As they journey through the forests of the Folk, Fia’s mission is complicated by her feelings for Rogan…and an unexpected attraction to the fae lord holding Eala captive.  Soon, Fia begins to question the truth of her origins and the reality of her mission, but time is running out to break Eala's curse. And unraveling the secrets of the past might destroy everything Fia has come to love.