The Burning Maze
Rick Riordan
The Trials of Apollo (3)
The Crown of Ptolemy
Demigods and Magicians (3)
How to Ride a Dragon's Storm
Cressida Cowell
How to Train Your Dragon (7)
The Titan's Curse
Percy Jackson and the Olympians (3)
The Last Olympian
Percy Jackson and the Olympians (5)