There is gonna be a season 6 but what puzzles me is was that sam or lucifer that came back at the end. Or was it another demon in sam? Because the lights on the street did flicker and thats a sign of a demon. But Sam and Dean have those tattoos that stop them from being possessed. They got it after Sam got possessed in season 2. So what do yall think about everything? I think the funniest part was when Castiel said Ass-butt. Oh and obviously Chuck was God.....go figure