Blood of Olympus epilogue

Rick Riordan has left us all hanging with so many questions after BoO. How does Leo get home? For those of you who read the Kane Chronicles, when does Percy speak Carter's name? Who brought them together? And what does he/she want? And a new plot twist: Remember friends new and old. Find out all of these questions in this epilogue. (I'll probably shoot for about 15 or so chapters.)