Thread:Turtle365/@comment-15395126-20151206015105/@comment-15395126-20151209034011

Thinking it through, I think the spin-off to focus on right now is The Doctor. Since Paternoster Row is like "Sherlock in space" and I've yet to see a single episode of Sherlock, writing a show like that would be too challenging at the moment. Rose Tyler: Earth Defence simply doesn't strike me as an interesting series to write at the moment, since I've yet to see TORCHWOOD and the series is based too much on Russell T Davies' work, while I'm high on Moffat's at the moment…

We will see about a Clara/Ashildr spin-off; the BBC has announced a book detailing the events of Ashildr's life, so I don't want to be redundant.

As for Missy, her origins are explained in The Doctor, as the Master is the main antagonist of Series 1. In The Doctor, the Master seeks Donna Noble's meta-crisis energy. He finally absorbs it at the end of the series; because the energy is from a female source, it makes the Master turn female when he regenerates as a means of cheating death.