The Sea of Monsters
Rick Riordan
Percy Jackson and the Olympians (2)
Hotel Valhalla Guide to the Norse Worlds: Your Introduction ...
Magnus Chase and the Gods of Asgard (4)
9 from the Nine Worlds
Magnus Chase and the Gods of Asgard (5)
The Lost Hero
The Heroes of Olympus (1)
How to Cheat a Dragon's Curse
Cressida Cowell
How to Train Your Dragon (4)
How to Speak Dragonese
How to Train Your Dragon (3)
The Red Pyramid
The Kane Chronicles (1)