User blog comment:Hyperborean/"The House of Hades" – official expectations blog/@comment-3249003-20130710052342

It think that Reyna will end up working together with the rest of the characters, and will help them find Percy and Annabeth. I bet she will be the one who pulls Percy up, and Annabeth will be all jealous and stuff and there will be tension and whatnot. Also I think that Leo will either 1.) Meet a mortal girl and start to like her, 2.) Stay single through the whole book and be OK with it (I personally like this the best cause everyone else has some kind of relationship and he's just like whatever) or 3.) Leo DIES (I hope he doesn't).