I agree with others about this episode. It's obvious it's not canon but completely separate and meant to be an homage to several science fiction productions of the past. In that regard, it's a rather fine and clever episode. And I can accept that and would have enjoyed it more if the episode had been complete. But it's not and that's why I gave it a very low rating. The episode literally screams for it to end with George waking up Halloween night having fallen asleep reading something like H.G. Wells' "War of the Worlds" (1898) or "In the Days of the Comet" (1906) and his nightmare giving him the idea for his next novel, which could have then been followed up on in later episodes. Or they could have kept the episode as is with a cliffhanger ending and had George mention in the next episode or a later one in season 12 about his horrible Halloween nightmare, again having it become his next novel, perhaps in season 13. But they've wasted the opportunity, as it is too late now to take advantage of it. Which is unfortunate, as it is otherwise a good standalone episode, if rather a bit weird for and not quite in keeping with the show.