Keeper of the Lost Cities
Shannon Messenger
Keeper of the Lost Cities (1)
Brisingr
Christopher Paolini
The Inheritance Cycle (3)
The Crown of Ptolemy
Rick Riordan
Demigods and Magicians (3)
Neverseen
Keeper of the Lost Cities (4)
The Demigod Files
Percy Jackson and the Olympians (4.5)
The Battle of the Labyrinth
Percy Jackson and the Olympians (4)
The Lost Hero
The Heroes of Olympus (1)
The Demigod Diaries
The Heroes of Olympus (0)
The Red Pyramid
The Kane Chronicles (1)