The power of Sorceress Elizabeth grows stronger by the day, and the clouds over Captive's Sound grown darker. Soon a terrible flood will drown everything and everyone in it's path, and in order to save her family, her friends and her Steadfast, Mateo, Nadia swore herself to the One Beneath. Nadia's only chance to learn how to defeat Him, and Elizabeth, is to pretend to be loyal student of dark magic. But to do so, she must abandon Mateo and the world she knows. If Nadia is overcome by the temptations of this new power, the girl she was might disappear forever. The battle lines are drawn, but which side will everyone fall on? Surprising alliances are made and true love is tested in the action-packed conclusion to the breathtaking Spellcaster series.