A Warp in Time (Horizon, Book 3)

Percy Jackson and the Lightning Thief (Book 1)

Percy Jackson and the Sea of Monsters (Book 2)

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)

His Dark Materials: The Amber Spyglass (Book 3)

The House of Hades (Heroes of Olympus Book 4)

The Mark of Athena (Heroes of Olympus Book 3)

Percy Jackson and the Battle of the Labyrinth (Book 4)

The Wee Free Men: (Discworld Novel 30)