Hotel Valhalla Guide to the Norse Worlds: Your Introduction ...
Rick Riordan
Magnus Chase and the Gods of Asgard (4)
The Hammer of Thor
Magnus Chase and the Gods of Asgard (2)
The Tyrant's Tomb
The Trials of Apollo (4)
The Chalice of the Gods
Percy Jackson and the Olympians (6)
Percy Jackson's Greek Heroes
The Sword of Summer
Magnus Chase and the Gods of Asgard (1)
Camp Jupiter Classified
The Trials of Apollo (4.50)