The Demigod Files is a companion book to the Percy Jackson and the Olympians series. It was released on February 10, 2009. It contains three short stories that are all in Percy Jackson's perspective. The stories are Percy Jackson and the Stolen Chariot, Percy Jackson and the Bronze Dragon, and Percy Jackson and the Sword of Hades. Another version of the book was released on January 7, 2010 to coincide with the movie: this version had a different cover with Logan Lerman who plays Percy in the film, holding the Master Bolt sitting on a ledge and eight pages of screen caps from the movie.