The Dark Prophecy
Rick Riordan
The Trials of Apollo (2)
The Demigod Files
Percy Jackson and the Olympians (4.5)
The Lightning Thief
Percy Jackson and the Olympians (1)
The Mark of Athena
The Heroes of Olympus (4)
The Fire Ascending
Chris D'Lacey
The Last Dragon Chronicles (7)
Fire World
The Last Dragon Chronicles (6)