This is the third and may be the final installment of the Kane Chronicles as Sadie puts it towards the end of the book. She said that they are "going to be so busy training and attending school and living [their] lives."
The story takes off around six months after Apophis broke away from his prison. However, the Chaos snake has yet to discharge an all-out assault on the mortal world as everyone expects.
The siblings and their initiates at the Brooklyn House are of the belief that Apophis is destryong all the copies of a specific version of The Book of Overcoming Apophis, the ones written by a certain Prince Khaemwaset, more popularly known as Setne. However, the Kanes or anyone for that matter still has no clue on how to defeat Apophis.


