User blog comment:Hyperborean/"The House of Hades" – official expectations blog/@comment-6068707-20130719162349

You guys should all remember, that in the story their isn't going to be much about them. I mean the story is supposed to be about the House of Hades, so why not mention them in like the knife or a dream, or probably iris message, I don't know.

But Rachel and Octavian are going to have as much air time as Grover did in the Last Olympian, short simple and sweet. If Riordan choose to put in that much information about them, I'd be more likely in the fifth book, unless he decides to make a campain book just for that side of the story.

More importantly I wonder what they're going to do with the Athena Parthenos, I mean don't they have to like restore the bond between Greeks and Romans with it. How will they do that?