The House of Hades is a fantasy-adventure novel written by American author Rick Riordan, based on Greek and Roman itinerarte.info was published on October 8, , and is the fourth book in The Heroes of Olympus series, preceded by The Mark of Athena and followed by The Blood of Olympus. This article is about the character. You may be looking for the series, the video game, the film, or the film soundtrack. Perseus "Percy" Jackson is a seventeen-year-old Greek demigod, the son of Poseidon and Sally Jackson. RICK RIORDAN is the author of the New York Times #1 best-selling Percy Jackson and the Olympians series: The Lightning Thief, The Sea of Monsters, The Titan's Curse, The Battle of the Labyrinth, and The Last Olympian.