So Kelly must have gotten away from Dagon, and it looks like Castiel and the baby are bonding. But is that going to stop the angel from taking out Lucifer’s baby?
Sam and Dean see Kelly and Castiel, but maybe Castiel has changed his mind on what to do. Or Castiel told them about the angel deal to get back into Heaven.
Mary looks like she's considering a proposal from Toni. Or she's just tired from all the torture. Or maybe she's just doing her best to listen to what the heck the new plan is.
Why do they call this place The Empty? It's full. It's full of sorrow and despair playing over and over again of angels and demons dreaming about their regrets. Forever.