To Kill a Kingdom is a young adult fantasy novel written by Alexandra Christo. It tells the story of Lira, a siren princess known as the Prince's Bane, and Elian, a prince and a notorious pirate hunter. When their paths cross, they form an unlikely alliance and embark on a dangerous journey that challenges their beliefs and forces them to confront their own identities. With its captivating blend of romance, action, and mythology, To Kill a Kingdom is a must-read for fans of fantasy and fairy tale retellings.