There are many books in the Percy Jackson and the Heros of Olympus series. Both series are written by Rick Riordan.
The first book in the Percy Jackson and the Olympians series is called the Lightning Theif. It was published in 2007.
The second book in the Percy Jackson and the Olympians series is The Sea of Monsters.
The third book in the Percy Jackson and the Olympians series is the Titan's Curse.
The fourth book in the Percy Jackson and the Olympians is the Battle of Labyrinth.
The Fifth book in the Percy Jackson and the Olympians is the Last Olympian.
The first book in the Percy Jackson and the Olympians series is called the Lightning Theif. It was published in 2007.
The second book in the Percy Jackson and the Olympians series is The Sea of Monsters.
The third book in the Percy Jackson and the Olympians series is the Titan's Curse.
The fourth book in the Percy Jackson and the Olympians is the Battle of Labyrinth.
The Fifth book in the Percy Jackson and the Olympians is the Last Olympian.
The first book in the Heros of Olympus series is the Lost Hero.
The second book in the Heros of Olympus series is the Son of Neptune.
The third book in the Heros of Olympus series is the Mark of Athena
The fourth book in the Heros of Olympus series is the House of Hades coming out on October 8th, 2013.
The second book in the Heros of Olympus series is the Son of Neptune.
The third book in the Heros of Olympus series is the Mark of Athena
The fourth book in the Heros of Olympus series is the House of Hades coming out on October 8th, 2013.