The Dark Reunion
L. J. Smith
The Vampire Diaries (4)
The Battle of the Labyrinth
Rick Riordan
Percy Jackson and the Olympians (4)
The Lightning Thief
Percy Jackson and the Olympians (1)
The Arctic Incident
Eoin Colfer
Artemis Fowl (2)
The Blood of Olympus: The Heroes of Olympus [Book 5]
The Heroes of Olympus (5)
The House of Hades: The Heroes of Olympus [Book 4]
The Heroes of Olympus (1)
The Mark of Athena: The Heroes of Olympus [Book 3]
The Heroes of Olympus (4)
The Son of Neptune: The Heroes of Olympus [Book 2]
The Heroes of Olympus (2)
The Lost Hero: The Heroes of Olympus [Book 1]