Quite a fun short story told through a series of emails and messages with Missy concocting her latest scheme whilst imprisoned in the vault whilst the Doctor bides his time letting her play it out and Nardole on the other hand is close to a panic attack.

A fun story let down by a  cis, bioessentialist view of gender. I just think it was a very boring way to approach it

The interactions between the Doctor, Missy, and Nardole were the best parts. I think the message format was an excellent choice