The Demigod Files
Rick Riordan
Percy Jackson and the Olympians (4.50)
Nightfall
Shannon Messenger
Keeper of the Lost Cities (6)
The Tyrant's Tomb
The Trials of Apollo (4)
Wrath of the Triple Goddess
Percy Jackson and the Olympians (7)
Percy Jackson's Greek Gods
Rick Riordan & John Rocco
The Burning Maze
The Trials of Apollo (3)