Percy Jackson's Greek Gods
Rick Riordan & John Rocco
The Burning Maze
Rick Riordan
The Trials of Apollo (3)
How to Train Your Dragon
Cressida Cowell
How to Train Your Dragon (1)
How to Ride a Dragon's Storm
How to Train Your Dragon (7)
The Tower of Nero
The Trials of Apollo (5)
The Hidden Oracle
The Trials of Apollo (1)
The Dark Prophecy
The Trials of Apollo (2)
The Tyrant's Tomb
The Trials of Apollo (4)
Camp Jupiter Classified
The Trials of Apollo (4.50)