Percy Jackson and the Lightning Thief (Book 1)
2008
The Mark of Athena (Heroes of Olympus Book 3)
2012
The Lost Hero (Heroes of Olympus Book 1)
2010
The House of Hades (Heroes of Olympus Book 4)
2013
Percy Jackson and the Titan's Curse (Book 3)
2008
The Son of Neptune (Heroes of Olympus Book 2)
2011