The Unwanteds

Percy Jackson and the Lightning Thief (Book 1)

Island of Legends

Percy Jackson and the Sea of Monsters (Book 2)

Dragon Fire

Percy Jackson and the Last Olympian (Book 5)

Percy Jackson and the Titan's Curse (Book 3)

The Blood of Olympus (Heroes of Olympus Book 5)

Dragon Bones

His Dark Materials: The Amber Spyglass (Book 3)

Island of Dragons

The House of Hades (Heroes of Olympus Book 4)

Dragon Captives

The Mark of Athena (Heroes of Olympus Book 3)

The Island of Graves

The Son of Neptune (Heroes of Olympus Book 2)

The Trap Door (Infinity Ring, Book 3)