Unseen (Outcast Season, #3)

About this book

After Cassiel and Warden Luis Rocha rescue an adept child from a maniacal Djinn, they realize two things: the girl is already manifesting an incredible amount of power, and her kidnapping was not an isolated incident. This Djinn--aided by her devoted followers--is capturing children all over the world, and indoctrinating them so she can use their strength for herself. With no other options, Cassiel infiltrates the Djinn's organization--because if Cassiel cannot stop the Djinn's apocalyptic designs, all of humanity may be destroyed.