Judging by the teaser this will be a "n hours/days earlier" episode. God dammit, I'm not ready for Peter Capaldi to leave!

Interesting spaceship!
Is it powered by the black hole or why doesn't it seem to get sucked in?

What does Team TARDIS have in their ears and why does Missy get to play the leader?
Does the wink after "distress call" mean this is a simulation? Is Missy learning how to help like the Doctor?

"Congratulations on your relative symmetry."
Exposition and Comic Relief.
"Also, it's his real name." That would be pretty hilarious.

He's blue! But why did I see that coming?

OH HELL NO, YOU'RE NOT KILLING OFF BILL!

"Are you having an emotion?"
Oh god, it's a variation of This Is Gallifrey. Right in the feels!

The Doctor describes the Master as his man crush, aw yeah.

Thank fuck the Monster of the Week ("The Patients"?) can apparently repair Bill!

Conversion? What, is she Robocop now?

Heh, she's kinda reminding me of Ironman with that thing on her chest.

That's some creepy shit! That's probably what Gatiss is aiming for, but never achieves.
Mr. Razor seems nice, but I'm so creeped out, that I don't dare trust him completely.

Ooh, interesting time movement - I hadn't considered that black hole's influence! So that's why the clock showed a different time than that other level and other level's wasn't moving. But why is a Master soundtrack piece playing? Did he have something to do with sending them there?

Oh! Now I recognize the nurse! She was the one with the dead flat mate in Sherlock 2x02.

Shit, what if the nurse told the truth and Bill's new heart won't work outside of the hospital? Because I just realized that what Bill is getting here is the typical Moffat treatment. Moffat's doomed women always get a bit more time. Probably because he can't bear to kill off characters. River's and Clara's time was running out, but they still got some extra time. Although, to look on the bright side, there was Jenny, who regenerated and then was fine (dammit, I want to see her again), and possibly Osgood, who maybe didn't die because that maybe wasn't the original Osgood. So maybe there's still hope for Bill! Curse you, Moffat, why do you have to make me worry?!

Blue guy's crewmates already have descendants?! So when Bill just said "How many more years?" she meant that actual years had already gone by? I'm worried again.

Aw, shit no, not the original Cybermen! They're so creepy! I mean, I can't really remember much about them, but they look creepy. Wait, didn't they once make the Doctor regenerate? Ugh, and now it'll happen again!

What, Razor knows who Missy is? Why?

I have a feeling I know that Earth-like planet's name. I don't remember the Master causing trouble there, but Razor seems to imply that's what happened.

I'm getting sick with worry, that fresh Cyberman better not be Bill!

OH MY FUCKING GOD, SIMM!MASTER! HOLY SHIT! Holy shit, so that's why something about Razor felt off! Wait, so will Missy regenerate into Simm again or is that the previous incarnation and Missy can't for some reason remember what she did?

OH! HELL! NO! Billll! ;___;

HOLY SHIT, THIS EP! So good, but so cruel! Bill better still be fixable!