The Hidden Oracle
Rick Riordan
The Trials of Apollo (1)
Unfinished Tales
J. R. R. Tolkien
Rain & Fire: A Companion to the Last Dragon Chronicles
Jay D'Lacey & Chris D'Lacey
Rain & Fire (1)
The House of Hades
The Heroes of Olympus (1)
The Son of Neptune
The Heroes of Olympus (2)