Frankenstein; Or, The Modern Prometheus (1818)
Mary Shelley
The Burning Maze: The Trials of Apollo [Book 3]
Rick Riordan
The Trials of Apollo (3)
The Raven Scholar
Antonia Hodgson
Eternal Path (1)
The Mark of Athena
Heroes of Olympus (3)
Percy Jackson's Greek Gods
Rick Riordan & John Rocco
Percy Jackson's Companion Books (3)