What's that you say? You were underwhelmed by last week's bland TV lady as a villain? Can I interest you in the actual, Biblical Satan?

I don't think I quite knew what to make of this episode when I first saw it - it's so unlike anything else we've seen in the new series. But hot damn, do I ever love it now.

There's a base! And it's under siege! Groundbreaking! The Doctor's quip about these bases being built out of kits is another bit that I definitely didn't appreciate at the time, but it's pretty funny. I think the Doctor/Rose relationship is in its ideal state here. Low-key flirty in a way that feels pretty real, without being maudlin (though it walks up to that line as they discuss what they'll do if they ever escape Sanctuary Base 6).

The episode handles the base crew very well - they're necessarily sketched out quickly, but they all seem like living, breathing people, and I really felt it when poor Toby and Scooti met their fates. Will Thorp deserves particular credit for making Toby seem like a sympathetic character, and then flipping to seeming incredibly threatening once he's been taken over by the Beast.

Pretty nice spacesuits. I wonder if we'll ever see them again.

I'm sure there's loads that can be said about this episode, but I dunno. It's great. Bring on the next one. I'll be waiting here with an inverted self-extrapolating reflex of 6 to the power of 6 every 6 seconds.