The Lightning Thief by Rick Riordan | The Sea of Monsters by Rick Riordan | Demigods & Magicians by Rick Riordan | Percy Jackson's Greek Gods by Rick Riordan | The Tyrant's Tomb by Rick Riordan | The Burning Maze by Rick Riordan | The Dark Prophecy by Rick Riordan | The Blood Of Olympus by Rick Riordan | The Hidden Oracle by Rick Riordan | The Demigod Files by Rick Riordan | The Last Olympian by Rick Riordan | The House of Hades by Rick Riordan | The Son of Neptune by Rick Riordan | The Mark of Athena by Rick Riordan | Freefall by Roderick Gordon | The Battle of the Labyrinth by Rick Riordan | The Demigod Diaries by Rick Riordan | Percy Jackson and the Singer of Apollo by Rick Riordan | The Throne of Fire by Rick Riordan | The Lost Hero by Rick Riordan |