User blog comment:Hyperborean/"The House of Hades" – official expectations blog/@comment-5039175-20121106194204

I think the 4 POVs will probably be by Roman demigods. I think they could/ I want them to be

Jason

Hazel

Frank

Reyna/Percy/Nico

It could be Reyna's POV as she will be with Camp Jupiter as they attack Camp Half-blood. It could be Percy's POV as he is part of Camp Jupiter (he has the tattoo), so the readers can see what it is like in Tartarus. It could also be Nico's POV as he is a member of Camp Jupiter (Sort of)