One-Sentence Summary The House of Hades by Rick Riordan is a thrilling and emotionally intense installment in The Heroes of Olympus series, following Percy Jackson, Annabeth Chase, and their friends as they race to close the Doors of Death, facing terrifying monsters, gods, and personal trials in the deadly depths of Tartarus and across war-torn lands above. Book Information Title : The House of Hades Author : Rick Riordan ISBN : 978-1423146773 Genres : Fantasy, Mythology, Young Adult, Adventure, Action, Greek Mythology, Roman Mythology Published : October 8, 2013 In-Depth Summary of The House of Hades Introduction The House of Hades is the fourth book in The Heroes of Olympus series, following The Mark of Athena . Picking up immediately after the shocking cliffhanger in which Percy Jackson and Annabeth Chase fell into the pit of Tartarus, the book is split into two major narratives: Percy and Annabeth’s perilous journey through Tartarus – The couple must traverse th...