Monster

In the world Rick Riordan created for Percy Jackson, fifteen-year-old Kiera faces her greatest challenge. In her hometown, a ritual called the Daganethea requires her to kill an evil, cunning, and vicious creature before she can return home. But in order to succeed in her life's goal of becoming an elite guard, Kiera must do more than just complete her challenge. She must infiltrate the base of her dangerous enemies, without letting them find out her greatest secret.