When seventeen-year-old Calla is sacrificed to an ancient tree as punishment for her mother's betrayal, she doesn't die. She wakes in the cursed realm of Thornecourt-a kingdom trapped between life and death, ruled by a fae king with a heart made of glass. The court has been waiting for her-the girl of prophecy who could break the curse... or become its final victim. But to survive, Calla must endure twisted court politics, blood oaths, masked balls, and the dangerous affections of three powerful rivals: a cruel fae prince, a loyal warrior with secrets, and the cursed king who can't touch anyone without killing them.