The Red Pyramid
Rick Riordan
The Kane Chronicles (1)
The Son of Sobek
Demigods and Magicians (1)
The Tower of Nero
The Trials of Apollo (5)
The Sea of Monsters
Percy Jackson and the Olympians (2)
The Battle of the Labyrinth
Percy Jackson and the Olympians (4)
The Demigod Files
Percy Jackson and the Olympians (4.5)
The Demigod Diaries
The Heroes of Olympus (0)
The Lost Hero
The Heroes of Olympus (1)