Unraveled
Shannon Messenger
Keeper of the Lost Cities (9.5)
The Hidden Oracle
Rick Riordan
The Trials of Apollo (1)
The Dark Prophecy
The Trials of Apollo (2)
The Lost Hero
The Heroes of Olympus (1)
The Burning Maze
The Trials of Apollo (3)
Percy Jackson's Greek Gods
Rick Riordan & John Rocco
The Son of Neptune
The Heroes of Olympus (2)