The Battle of the Labyrinth
Rick Riordan
Percy Jackson and the Olympians (4)
The Blood of Olympus
The Heroes of Olympus (5)
The Demigod Files
Percy Jackson and the Olympians (6)
The House of Hades
The Heroes of Olympus (4)
The Last Olympian
Percy Jackson and the Olympians (5)
The Lightning Thief
Percy Jackson and the Olympians (1)
The Lost Hero
The Heroes of Olympus (1)
The Mark of Athena
The Heroes of Olympus (3)
The Sea of Monsters
Percy Jackson and the Olympians (2)
The Son of Neptune
The Heroes of Olympus (2)
The Titan's Curse
Percy Jackson and the Olympians (3)