I categorically refuse to call this "season one" of Doctor Who (2023) so just jot that down, Disney.
Anyway. I think I really liked this episode but also... huh? What is happening here?
Cons:
This is maybe the epitome of amazing setup, disappointing payoff. I was riveted the whole way through the run-time trying to figure out what was going to happen. I was scared of the creepy lady, I was intrigued by the Mad Jack story, I was waiting with baited breath for the big reveal. And then, the second the episode was over, I sat there thinking...
But wait. What? Does any of this make any sense at all? So, as far as I can tell, creepy old woman was Ruby as an old lady getting sent back and stuck in time somehow, sent to warn young Ruby to stop the Doctor from stepping on the fairy circle and breaking it, thus preventing her lifetime of loneliness as everyone she ever meets leaves her.
But... okay, what? What did the old Ruby say to everyone who came close to her to talk to her, that made them all run away in fear? And it wasn't just fear in the moment: Ruby's mother ran and then shunned her entirely and wouldn't ever speak to her again for the rest of her life. Why? What was said? We get no answer about this whatsoever. And was the Mad Jack thing just a coincidence? Did the circle that the Doctor broke actually have something to do with it? Why would that name be on the scrolls if it was something from the future? Did older Ruby... leave that message there? But that doesn't make any sense either, does it? How much agency did older Ruby have over what she was doing? Not much, it seems, since she just stood there and repeated the same series of gestures again and again. What was the circle, actually? Magically speaking? Did it send the Doctor somewhere specific? Just blip him out of existence?