Icefire
Chris D'Lacey
Camp Half-Blood Confidential: Your Real Guide to the Demigod ...
Rick Riordan
Camp Jupiter Classified
The Trials of Apollo (4.5)
The Tyrant's Tomb
The Trials of Apollo (4)
How to Train Your Dragon
Cressida Cowell
How to Train Your Dragon (1)
How to Be a Pirate
How to Train Your Dragon (2)
How to Speak Dragonese
How to Train Your Dragon (3)
How to Cheat a Dragon's Curse
How to Train Your Dragon (4)