User blog comment:Hyperborean/"The House of Hades" – official expectations blog/@comment-78.149.226.85-20121224143519/@comment-67.7.119.134-20121226220143

I don't really think that anybody is going to die out of the seven to be honest. Yes I do think that someone will have to stay behind and close the doors of death but, they wouldn't necessarily be dead would they? And if someone did stay behind and get captured by Gaea then they would only be captured, not dead, captured. I think that whoever could get captured will escape or get rescued. And if someone is truly going to die out of the seven then I think it would be Frank. But who knows? Rick Riordan might throw another curveball and have someone completely unexpected die or get trapped behind the doors. But thats if we really knew that somone will die. Don't think that someone will die but get much more close to death than the rest of the seven. All Leo said was that someone would have stay in the undeworld trapped. Nothing about dying. And if someone was going to die sometime in the fifth book, then they would die fighting at Olympus or if they get back in time, during the fight between the Greeks and the Romans.