The Heroes of Olympus Books in Order

The Heroes of Olympus series picks up the thread left at the end of The Last Olympian and asks what happens when the gods’ Roman and Greek sides can’t ignore each other anymore. A new Great Prophecy calls for seven demigods to stand together against an enemy older than the Titans: Gaea herself. To make that possible, Riordan pulls his world wide open, introducing a second camp of Roman demigods on the American West Coast and a bigger cast of heroes.

The story unfolds across five books—The Lost Hero, The Son of Neptune, The Mark of Athena, The House of Hades, and The Blood of Olympus—told through rotating points of view. Jason, Piper, and Leo launch the first quest aboard the flying ship Argo II, quickly joined by Percy, Annabeth, Hazel, and Frank. Each book sends them deeper into ancient lands, from Camp Jupiter and Rome to the House of Hades and finally the battlefields around Athens.

The stakes keep rising, but the heart of the series is watching these seven kids learn to trust each other across different backgrounds, loyalties, and even pantheons.

Heroes of Olympus skews a little older than the original Percy Jackson books: there’s more romance, more trauma, and more time spent inside each character’s fears and mistakes. At the same time it keeps the quick banter, monster battles, and road-trip structure that younger readers loved. Moments at Camp Half-Blood and Camp Jupiter offer quieter glimpses of community life—war games, meals, cramped cabins—that make the world feel lived in rather than purely epic.

This page focuses on getting the reading order right and explaining how the series connects to the rest of the Camp Half-Blood Chronicles. If you’ve finished Percy Jackson & the Olympians, you can move straight into The Lost Hero and read the five books in publication order. From there, The Trials of Apollo picks up many of the same characters, so we also note the companion collections and short stories that slot in around the main quest.