Power is much easier to acquire than it is hold on to. Jude learned this lesson when she reased her control over the wicked king, Cardan, in exchange for immeasurable power. Now as the exiled, mortal Queen of Faerie, Jude is powerless and left reeling from Cardan's betrayal. She bides her time, determined to reclaim everything he took from her. Opportunity arrives in the form of her twin sister, Taryn, whose life is in peril. Jude must risk venturing back into the treacherous Faerie Court and confront her lingering feelings for Cardan if she wishes to save her sister. But Elfhame is not as she left it. War is brewing. And when a powerful curse is unleashed, panic spreads throughout the land and Jude is forced to choose between her ambition and her humanity... From #1 New York Times bestselling author Holly Black comes the highly anticipated and jaw-dropping finale to the Folk of the Air series.