Lettermen jacket wearing looser Granpa Winchester from the past reverse back to future'd himself to Sam and Deans time to belittle the boys for being Neanderthal like hunters and take the entire cannon of the show into exile! Oh yea and their was some demon slaying but that was more of a side gig. This episode takes the entire canon of Supernatural bends it over and treats it like a fresh prison inmate. The mythos created around the show's main story is a delicate balance of fantasy and reality so when you take a secret fantasy masonic like organization and throw the Winchesters in it this takes the small thread of believability the show had and puts it in front of a leviathan for snacks!
To appreciate this episode of Supernatural is to appreciate a plane full of new born babies crashing into a tar pit. Ya ok the wind screeching past the wings as they grasp to hold their place in the sky, or the intense heat and blinding light of the fuselage bursting into flames might grab a few moments of attention but whats left is sad and no longer entertaining. With the loss of Kripke It had been a long time coming and it was amazing the show kept its life this long but sucked dry its now time to move on.