OK, this is a two parter, so I’ll keep this spoiler-free.
What?! How?? Who!??!
Yeah, that’s about it. Best bit for me was that I hadn’t seen any spoilers so I was genuinely surprised by a major development. I mean really surprised. And impressed. And that was before the opening titles. It kind of got better after that, to the point where I was suffering from major jaw-droppage.
More (with details) after next week’s episode.
There is some Doctor Who Extra material, which has been split into little bits this time, so I won’t be doing the embedding thing. You’ll find them (warning: spoliers) linked from Doctor Who News. But seriously, don’t go there until you’ve seen the episode, even if the clips do omit the Biggest Spoiler.