The Lie of the Land
The Monks now lead the planet, and to most of humanity, they appear to have been on Earth for millions of years, guiding the species’ development. Bill and a few others know the truth. Nardole locates Bill, and they search for the Doctor. They locate him, but he is cooperating with the Monks. Bill shoots him and it appears he is regenerating, but it is all a trick to see whether Bill has been fooled by the Monks.
At the university, the Doctor speaks to Missy, who reveals Bill has to die to break the Monk’s influence on Earth. The Doctor hopes there is another solution, therefore they infiltrate the Monk’s pyramid in London.
The Doctor attempts to break the link but fails. Bill prepares to sacrifice herself, however the Monk’s images are replaced with those of Bill’s mother, which represents hope. Due to their actions, the Monks leave and humanity recall none of the events. Back in the Vault, Missy expresses remorse at those she has murdered.
Well, I could see the ending to this coming about half way through. Evil beings are always weak minded and the good somehow have intellect to win. The only thing different is that the Doctor does very little. It’s Bill that’s the one with initiative.