The House of Hades
Rick Riordan
The Heroes of Olympus (1)
The Staff of Serapis
Demigods and Magicians (1)
Unlocked
Shannon Messenger
Keeper of the Lost Cities (8.5)
The Burning Maze
The Trials of Apollo (3)
How to Cheat a Dragon's Curse
Cressida Cowell
How to Train Your Dragon (4)