The Demigod Files is a collection of stories by Rick Riordan published on February 10, 2009. It is a companion book to the main series, "Percy Jackson and the Olympians". It contains three short stories, titled "Percy Jackson and the Stolen Chariot", "Percy Jackson and the Bronze Dragon", and "Percy Jackson and the Sword of Hades". It also contains a preview of "The Last Olympian". Additional contents include interviews with some of the campers, a picture of Annabeth's trunk, a map of Camp Half-Blood, and various crossword puzzles and other activities. It is set between the fourth book, "The Battle of the Labyrinth", and the fifth book, "The Last Olympian".