I love that Missy managed to escape the vault by swapping bodies with the Doctor. It's nice to see that she didn't murder anyone this time. I love how the TARDIS growled at her. That was the perfect reaction. And it was nice to see Bill too. Of course the Doctor was able to escape the vault. I don't thing there's a prison anywhere in the universe that could hold him. Great story.
Author's Response: Thanks for reading! :)