In the grand finale of the Throne of Glass series, Aelin Galathynius faces the ultimate test of strength and will. Trapped and tortured within an iron coffin, she must maintain her resolve against the dark machinations of the Queen of the Fae, as her friends battle to save their kingdom from destruction. Bonds are tested and fates interwoven, with the fate of Erilea hanging in the balance. Heroes scattered across the lands must unite and rise against the encroaching evil, where the strength of friendship and the heart's resilience are the keys to a better world. Sarah J. Maas's epic narrative delivers a powerful conclusion to Aelin's journey from enslaved assassin to inspiring queen.