Sixteen-year-old Nina continues her fight to save her sister and, ultimately, humanity by joining forces with rogue exorcists.

Serena, a moon goddess with the power to read minds, is possessed by the spirit of a woman who, in the thirteenth century, betrayed the evil Atrox and has now entangled Serena and herself in a plot to overthrow him.

"Esta and Harte race through time and across the country to steal back the remaining elemental stones needed to bind the book's power, stop the Order, and save the future of the Mageus"--

When Berkley arrived in Italy a week ago, the last thing she expected was that she'd end up fighting for her life. After spending six months at the Institute, confined to a room with the dangerous-yet-alluring Sofia Flores, Berkley was certain that a vacation in Italy with her two best friends would be the perfect getaway. But Berkley is hiding a terrible secret, one that threatens to undo everything. As she's forced to face her wicked past, she learns...

Allen Walker, along with the other Exorcists--people possessed by God--must prevent the end of the world by fighting and defeating the Millennium Earl, demons, and evil using the special substance known as Innocence.