How to Break a Dragon's Heart
Cressida Cowell
How to Train Your Dragon (8)
The Sword of Summer
Rick Riordan
Magnus Chase and the Gods of Asgard (1)
The Hidden Oracle
The Trials of Apollo (1)
The Hobbit
J. R. R. Tolkien
The Mark of Athena
The Heroes of Olympus (4)
The Serpent's Shadow
The Kane Chronicles (3)