Keeper of the Lost Cities
Shannon Messenger
Keeper of the Lost Cities (1)
Nightfall
Keeper of the Lost Cities (6)
The Crown of Ptolemy
Rick Riordan
Demigods and Magicians (3)
The Battle of the Labyrinth
Percy Jackson and the Olympians (4)
The Red Pyramid
The Kane Chronicles (1)
How to Speak Dragonese
Cressida Cowell
How to Train Your Dragon (3)
How to Cheat a Dragon's Curse
How to Train Your Dragon (4)