A companion volume to the Percy Jackson and the Olympians series, presented as an in-world dossier compiled for demigods. Rather than a full novel, it collects three original short stories starring Percy Jackson and his friends, alongside bonus extras that flesh out the world of Camp Half-Blood. In "Percy Jackson and the Stolen Chariot," Percy and Clarisse race to recover Ares's war chariot; in "Percy Jackson and the Bronze Dragon," Percy, Annabeth, and Beckendorf take part in a deadly capture-the-flag game; and in "Percy Jackson and the Sword of Hades," Persephone sends Percy, Thalia, and Nico into the Underworld to retrieve Hades's newly forged sword before it falls into the wrong hands. Between the stories, the book offers comic faux-interviews with characters such as Grover and Clarisse, plus a map of Camp Half-Blood, an illustrated look at the contents of Annabeth's trunk, demigod-themed puzzles including a crossword and a word search, and a short sneak peek at The Last Olympian. The three stories slot into gaps between the main novels, so they read best for fans who already know the series. Compact and extras-driven, The Demigod Files is a companion collection rather than a main-series installment, ideal for readers who want a little more time at Camp Half-Blood.