The House of Hades: The Heroes of Olympus [Book 4]
Rick Riordan
The Heroes of Olympus (1)
The Mark of Athena: The Heroes of Olympus [Book 3]
The Heroes of Olympus (4)
Exile
Shannon Messenger
Keeper of the Lost Cities (2)
The Two Towers
J. R. R. Tolkien
The Lord of the Rings (2)