the lost hero series in order

What Is The Lost Hero Series in Order?

First off, let’s clear something up: there is no separate series called The Lost Hero. That’s actually the title of the first book in The Heroes of Olympus series. So when people ask about the lost hero series in order, they really mean the correct sequence of the five books in The Heroes of Olympus. Here’s the lineup:

1. The Lost Hero
2. The Son of Neptune
3. The Mark of Athena
4. The House of Hades
5. The Blood of Olympus

Each book builds on the last, introducing more demigods and involving both Greek and Roman mythology in one joint saga. Reading these out of order? You’re gonna get confused, fast.

Why Reading in Order Really Matters

These books aren’t just interconnected—they’re interdependent. By The Mark of Athena, you’re juggling seven major characters and plotlines that directly tie to events from the earlier books. The narrative assumes you’ve read them in order.

Take The Son of Neptune, the second book. It’s told from Percy Jackson’s perspective, but he’s suffering from amnesia and ends up in a Roman camp. If you skip the first book, you won’t understand why Percy’s memory is gone or why Jason (the lead in the first book) is suddenly a big deal. That context carries through each title.

Quick Overview of Each Title

Here’s a quick pulsecheck on each of the five books in the lost hero series in order:

1. The Lost Hero Introduces Jason, Piper, and Leo—three demigods with serious baggage. Kicks off the Roman mythology angle and hints at an enemy even more powerful than Kronos.

2. The Son of Neptune Cuts to Percy Jackson (yes, from the OG series). He’s in Roman demigod territory now, setting the stage for a major GreekRoman alliance.

3. The Mark of Athena Finally brings our new and old heroes face to face. The quest heads to Rome, and we dive deeper into Annabeth’s role in the prophecy.

4. The House of Hades Darkest book in the set—literally. Percy and Annabeth are stuck in Tartarus, battling monsters and psychological trauma. Big character growth across the board.

5. The Blood of Olympus Climax time. The seven demigods take on Gaea, and secrets from Roman and Greek camps collide. It ties up dozens of loose threads—but not without emotional hits.

How The Lost Hero Series in Order Connects to Everything Else

If you’re just now learning about these books, here’s your roadmap:

1. Start with Percy Jackson and the Olympians (5 books).
2. Then jump to The Heroes of Olympus (aka the lost hero series in order).
3. After that, read The Trials of Apollo (another 5book arc).

The plots build off each other. Characters grow, worldbuilding evolves, and mythology from across cultures stacks up. Skipping series or reading out of order means missing a lot of context and payoff.

Tips for New Readers Tackling The Lost Hero Series in Order

Stick to the sequence. Even if you’re tempted to skip ahead to Percy’s return in book two, don’t. You’ll thank yourself later. Use a character tracker. There are a lot of side characters, gods, and shifting allegiances. Refresh your Percy Jackson knowledge. Especially if it’s been a while, rereading (or even skimming) the original five books helps. Set a pace. These are chunky books—around 500–600+ pages each. A consistent reading schedule will keep the plot lines fresh.

Final Thoughts

The popularity of Riordan’s universe isn’t just about fandom hype—it’s the result of tight storytelling, compelling characters, and mythological depth. Reading the lost hero series in order isn’t just “nice to do”—it’s necessary if you want the full emotional and narrative payoff. So if you’re jumping in now, go from The Lost Hero to The Blood of Olympus, no skips, no shortcuts.

Because in this series? Every page counts.