Rick Riordan

Percy Jackson and the Olympians, Book Five: The Last Olympian

Percy Jackson and the Olympians, Book Four: The Battle of the Labyrinth

Percy Jackson and the Olympians, Book One: The Lightning Thief

Percy Jackson and the Olympians, Book Three: The Titan's Curse

Percy Jackson and the Olympians, Book Two: The Sea of Monsters

Percy Jackson and the Olympians: The Chalice of the Gods

Percy Jackson and the Olympians: Wrath of the Triple Goddess