The Black Moon Chronicles: The Gates of Hell (The Black Moon Chronicles #12)

Wismerhill has finally made it to the top and it seems like nothing more can get in his way. But then he gets a surprise visit from his father, who he thought was dead. The mysterious Prince of Clouds reveals some hard truths that shake up Wismerhill’s world and stir him into action. But he has to move fast! The gates of hell have been opened and demonic hoards are wreaking havoc all over the empire. Wismerhill sets out on an urgent quest to save the Earth from absolute destruction.