Given how things went with the Vault storyline, I was hoping the Doctor would react a bit more specifically to the Master returning to evil than just general shock at seeing him. “Missy, what the hell? Things were going so good between us! Remember, ‘I’m Doctor Who!’ ‘I was on your side all along!’ What happened?” Oh, well, maybe next week.
Speaking of Season 10, though, I’d initially assumed all the extra Earths in the graphic were parallel universes, but what if they’re actually duplicate Earths around space, a la Mondas? Or Mondas is being retconned to be less absurd by being from a parallel universe?
The “Everything you know is wrong!” cliffhanger (along, a little, with the Doctor and Yaz being imprisoned in what very much appears to be a brain) makes me fear that the stupidest rumor I heard about this season might be true which, if so, would be an act of hair-splitting, technicality-riding, trying-to-make-everyone-happy-by-not-actually-doing-anything-ing that would be worthy of “The Rise of Skywalker.”