How to Train Your Viking
Cressida Cowell
How to Train Your Dragon (1.5)
How to Cheat a Dragon's Curse
How to Train Your Dragon (4)
The Legend of Sigurd and Gudrún
J. R. R. Tolkien
Keeper of the Lost Cities
Shannon Messenger
Keeper of the Lost Cities (1)
The Serpent's Shadow
Rick Riordan
The Kane Chronicles (3)
The Red Pyramid
The Kane Chronicles (1)