The House of Hades: Chapters 17–32

In the fourth book of the Heroes of Olympus series, the Doors of Death must be found and closed. Rick Riordan uses these words to describe the demigods' adventures in the Underworld.

Here are links to our lists for the book: Chapters 1–16, Chapters 17–32, Chapters 33–48, Chapters 49–62, Chapters 63–78

Here are links to our lists for The Heroes of Olympus series by Rick Riordan: The Lost Hero, The Son of Neptune, The Mark of Athena, The House of Hades, The Blood of Olympus

And here are links to our lists for the Percy Jackson & the Olympians series by Rick Riordan: The Lightning Thief, The Sea of Monsters, The Titan’s Curse, The Battle of the Labyrinth, The Last Olympian