Sam and Dean help a cop who dreams that he may have killed innocent people on Supernatural. "Man's Best Friend with Benefits" is the 15th episode of the show's eighth season.
Will Dean and Sam end up fighting the Nazis during their investigation on Supernatural. "Everybody Hates Hitler" is the 13th episode of the show's eighth season.
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.