The Chalice of the Gods
Rick Riordan
Percy Jackson and the Olympians (6)
How to Ride a Dragon's Storm
Cressida Cowell
How to Train Your Dragon (7)
Hero's Guide to Deadly Dragons
How to Train Your Dragon (6)
The Demigod Files
Percy Jackson and the Olympians (4.50)
Hotel Valhalla Guide to the Norse Worlds: Your Introduction ...
Magnus Chase and the Gods of Asgard (4)
The Son of Neptune
The Heroes of Olympus (2)
The Red Pyramid
The Kane Chronicles (1)
The Burning Maze
The Trials of Apollo (3)
The Tyrant's Tomb
The Trials of Apollo (4)
How to Be a Pirate
How to Train Your Dragon (2)
How to Speak Dragonese
How to Train Your Dragon (3)
How to Cheat a Dragon's Curse
How to Train Your Dragon (4)