Doctor Who: 20 Things You Didn't Know About Heaven Sent
7. It Broke A Bizarre Moffat Record
Series 9 was Steven Moffat's fifth series as Doctor Who showrunner, and it ended up breaking a record when it came to his writing.
Up to this point, the penultimate episode of every Moffat series had featured the Cybermen.
They were part of the alliance in The Pandorica Opens (and one of them terrorised Amy Pond earlier in the episode), they annoyed James Corden in Closing Time, they chased the Doctor around a theme park in Nightmare in Silver, and were at the command of Missy in Dark Water.
As for Heaven Sent? Not a single murderous cyborg to be found.
The penultimate episode from the next series (Series 10's World Enough and Time) does have the Cybermen in it, so Heaven Sent really does stand alone.