The Blood of Olympus
Rick Riordan
The Heroes of Olympus (5)
Legacy
Shannon Messenger
Keeper of the Lost Cities (8)
How to Steal a Dragon's Sword
Cressida Cowell
How to Train Your Dragon (9)
The Lightning Thief
Percy Jackson and the Olympians (1)
How to Cheat a Dragon's Curse
How to Train Your Dragon (4)