1)"It's 1974. You're the assistant." A little gag, perhaps, on the facct that "companions" were called "assistants" in those days.
2)"Ignorance is Carlisle." OK.
3)"Don't trust him. There's a sliver of ice in his heart."
4)"It doesn't like me." I guess it is a running gag.
5)"We're all ghosts to you."
6)He pronounces "Metebelis" wrong.
7)"It's a subset of the Eye of Harmony." It would've thought that was destroyed when Gallifrey was.
8)"I am the Doctor and I am afraid."
Overall: I liked this one. Spooky and atmospheric. Vaguely reminiscent of ""Image of the Fendahl".
Jessica Raine, who played the empathy Emma Grayling in this episode, also played Verity Lambert in the TV movie about the William Hartnell years, “An Adventure in Space and Time.” I didn't recognize her from this episode when I watched the movie recently, but when I re-watxched this episode last night I recognized her from the movie immediately.
Interesitng. I still haven't had a chance to see that TV movie. I hope it will be released on disc at some point.