Cursekeeper

"Torn from her home and forced to train at the brutal Forge as a child, Thalia Marrow has only ever known the life of a Scion-one sworn to guard the Library of Curses. But on the night she crosses paths with an enigmatic Fae, the Library is ransacked and her brother is taken by demons, leaving Thalia one of the last Scions still alive. Desperate to find her only family, Thalia follows the bloody trail to the mysterious Soren-a ruthless Fae prince who once led a war so brutal it shattered kingdoms, and who was cursed and banished along with his entire court. Everything about him is dangerous. Everything about him calls to her. Bound by necessity, the warrior librarian and the fallen prince must work together to uncover what happened at the Library and unmask the shadowy Lighteater unleashing curses across the realm. But in the decadent, treacherous city of Delfs, not all is as it seems. As the threat of war rises and Thalia's feelings for Soren grow, so too does the truth of his bloody past-and the curse that could destroy them both. In a world of impossible magic, shadow demons, and deadly Fae assassins, only one truth remains: only the wicked rule"--