All The Wicked - Catelyn Wilson, Penguin Books Ltd

Eager to find the answers she can’t locate in the shelves of Ravenswood library, Andy Emmerson visits Jae in the underworld. Only, it is empty of the Gods that once ruled it and inexplicable clues start to appear directing them to The Order. Together they must travel to Eidolon University where they will investigate The Order and unlock its secrets. Soon they are catapulted into a world of old magic, dangerous rituals, and demonic activity. A world they thought they’d left behind at Ravenswood. If they fail to discover The Order, and the school’s secrets, humanity will fall to the fires of hell.