I'm so glad Moffatt decided to revert back to the format of a two Part finale, the last few have been good, but being single episodes both felt rushed and messy. This showed what can happen when a story is allowed to develop.
I'll say it, I don't think the show can get any better then this, it was totally mesmerising as an episode, FABULOUS. I can't even begin to say what worked, who was good, it was just all amazing.
I love the utter darkness of it, Doctor Chang's explanation of the white noise, that when you die you're not really dead etc, and that the dead can still feel, just genius, literally the stuff of nightmares. The show cannot get any darker then this. 'Don't cremate me!' Shudders.
The recreated scene of the Cybermen walking in front of St Paul's Cathedral too, brilliant.
Missy, she was sensational, what a fabulous performance from Michelle Gomez, pizazz, energy, craziness, just a bubbling ball of brilliance, her reveal at the end, one of the best moments of Nu Who, it gave me chills, Gomez played off Capaldi so well. Great too that Chris Addison got to appear with Capaldi again, he's a joy too. Danny's choice at the end had me near to tears, the music was beautiful, so bleak.
10/10 Epic perfection.