The Mark of Athena
Rick Riordan
The Heroes of Olympus (4)
How to Seize a Dragon's Jewel
Cressida Cowell
How to Train Your Dragon (10)
The Tower of Nero
The Trials of Apollo (5)
The Demigod Files
Percy Jackson and the Olympians (4.50)
The Serpent's Shadow
The Kane Chronicles (3)
The Son of Neptune
The Heroes of Olympus (2)
The Lost Hero
The Heroes of Olympus (1)