Witchbane — Amy Sumida

The battle for Unseelie has been won, and Lord Raza Tnyn is now King Raza the Second. But Uisdean, the last king of Unseelie, is on the loose in the Human Realm with his resurrected wife, Rue, and an ancient fairy weapon. The Councils and the Coven are on the case, and Princess Seren is happy to leave the problem in their capable hands. Until someone important to Seren goes missing and witches start turning up dead. To save an entire race from the schemes of her evil relatives, the Twilight Princess will forsake her crown and return to her extinguisher roots. But defiance comes at a price, and in saving the witches, Seren may end up destroying herself.