The Demigod Files
Rick Riordan
Percy Jackson and the Olympians (4.5)
Camp Half-Blood Confidential: Your Real Guide to the Demigod ...
Nightfall
Shannon Messenger
Keeper of the Lost Cities (6)
Hotel Valhalla Guide to the Norse Worlds: Your Introduction ...
Magnus Chase and the Gods of Asgard (4)
Dark Fire
Chris D'Lacey