The Titan's Curse
Rick Riordan
Percy Jackson and the Olympians (3)
The Last Olympian
Percy Jackson and the Olympians (5)
The Battle of the Labyrinth
Percy Jackson and the Olympians (4)
The Sea of Monsters
Percy Jackson and the Olympians (2)
The Lightning Thief
Percy Jackson and the Olympians (1)
The Mark of Athena
Heroes of Olympus (3)
The Lost Hero
Heroes of Olympus (1)
The Demigod Files
Percy Jackson and the Olympians (0)
The Son of Neptune
Heroes of Olympus (2)
The Demigod Diaries
Heroes of Olympus (0)
The House of Hades
Heroes of Olympus (4)
The House of Hades (Heroes of Olympus Book 4)
The Heroes of Olympus (4)
The Son of Neptune (Heroes of Olympus Book 2)
The Heroes of Olympus (2)
The Demigod Diaries (The Heroes of Olympus, Book 2.5)
The Heroes of Olympus (2.5)
The Percy Jackson and the Olympians Pbk 3-Book
The Mark of Athena (The Heroes of Olympus, Book Three)
The Heroes of Olympus (3)
The Lost Hero (Heroes of Olympus Book 1)
The Heroes of Olympus (1)
Percy Jackson and the Olympians: The Lightning Thief