User blog comment:Hyperborean/"The House of Hades" – official expectations blog/@comment-71.231.91.187-20130106200028

Just throwing this out there (considering everybody else overstated the theorys): What about Bessie? Who's to say there isn't a body of water down there in Tartarus? Maybe Bessie goes down there and picks percy and annabeth up, after all bessie owes percy one. Or maybe they sacrafices him? Idk, it's a silly theory I am just pointing out.