Board Thread:General Discussion/@comment-24713576-20140704210648/@comment-24713576-20140704211205

Here's one thing to think about.

The Lost Hero                                                                                                                                                                                                                                                  The Son of Neptune                                                                                                                                                                                                                                          The Mark of Athena                                                                                                                                                                                                                                         The House of Hades

Yes, mind blown.