The Heroes of Olympus Books
A selection of books
| Riordan | Blood of Olympus (The) | The Heroes of Olympus | 5 |
| Riordan | Lost Hero (The) | The Heroes of Olympus | 1 |
| Riordan | Mark of Athena (The) | The Heroes of Olympus | 3 |
| Riordan | Son of Neptune (The) | The Heroes of Olympus | 2 |