The Demigod Files
Rick Riordan
Percy Jackson and the Olympians (4.50)
The Tyrant's Tomb
The Trials of Apollo (4)
How to Train Your Dragon: 12
Cressida Cowell
How to Train Your Dragon (12)
The Sea of Monsters
Percy Jackson and the Olympians (2)
The Burning Maze
The Trials of Apollo (3)
Percy Jackson's Greek Gods
Rick Riordan & John Rocco
The Son of Neptune
The Heroes of Olympus (2)