Wholesale Treachery of Swans by A. B. Poranek

[Margaret K. McElderry Books] A #1 New York Times Bestseller From the New York Times bestselling author of Where the Dark Stands Still comes an atmospheric romantasy based on Swan Lake, following Odile as her plan to restore magic to her enchanted kingdom gets disrupted by a murder mystery—forcing her to beg for help from the young woman whose identity she stole. Can two girls—one enchanted, one the enchantress—save their kingdom and each other? Two hundred years ago, a slighted deity stole the magic from Auréal and vanished without a trace. But seventeen-year-old Odile has a plan. All her life, her father, a vengeful sorcerer, has raised her for one singular task: infiltrate the royal palace and steal the king’s crown, an artefact with enough power to restore magic. But to enter the palace, she must assume the identity of a noblewoman. She chooses Marie d’Odette: famed for her beauty, a rumored candidate for future queen…and Odile’s childhood-friend-turned-sworn-enemy.