My mid season finale prediction based on SDCC spoilers
As of right now, after hearing the spoilers from comic con, this is my mid season finale prediction for season 13:
Sam will try to convince Dean that opening the AU using Jack’s grace to try and get Mary back is the right thing to do, but Dean thinks Mary is already dead and he’ll be worried about Lucifer escaping the AU, so he’ll tell Sam “There’s no way in hell we’re doing that”.
Sam, being the optimist, won’t just let it go and he and Jack will go behind Dean’s back and use Jack’s grace to open the AU and attempt to get Mary back. Opening the AU will of course unleash all kinds of bad things (like Lucifer) and thus will cause their problems for the rest of the season. Sam will get blamed for everything as per usual since he’s the one that opened the portal to the AU world.
The mid season finale is of course 9 (or 8) episodes into the season and things could end up being a lot different by then but that’s my prediction for now. I really hope the show isn’t this predictable.