A Warp in Time (Horizon, Book 3)

Percy Jackson and the Lightning Thief (Book 1)

His Dark Materials: The Amber Spyglass (Book 3)

Percy Jackson and the Sea of Monsters (Book 2)

The House of Hades (Heroes of Olympus Book 4)

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

The Blood of Olympus (Heroes of Olympus Book 5)

Percy Jackson and the Last Olympian (Book 5)

The Mark of Athena (Heroes of Olympus Book 3)

The Son of Neptune (Heroes of Olympus Book 2)

The Tower of Nero (The Trials of Apollo Book 5)