How to Ride a Dragon's Storm
Cressida Cowell
How to Train Your Dragon (7)
The Serpent's Shadow
Rick Riordan
The Kane Chronicles (3)
The House of Hades
The Heroes of Olympus (1)
How to Steal a Dragon's Sword
How to Train Your Dragon (9)
Wrath of the Triple Goddess
Percy Jackson and the Olympians (7)
The Chalice of the Gods
Percy Jackson and the Olympians (6)
The Lightning Thief
Percy Jackson and the Olympians (1)
The Sea of Monsters
Percy Jackson and the Olympians (2)
The Titan's Curse
Percy Jackson and the Olympians (3)
The Battle of the Labyrinth
Percy Jackson and the Olympians (4)
The Last Olympian
Percy Jackson and the Olympians (5)
The Demigod Files
Percy Jackson and the Olympians (4.5)