Missy: Maximum Risk! was a documentary detailing Series 10. It was part of a series of documentaries about series 10 of Doctor Who.
Main subject
Peter, Steven, Pearl and Michelle talk about the massively huge risk it is to let Missy loose and give her a chance of proving she can be good, because she is the Doctor's oldest and best friend, and he thinks that nothing will ever progress if you don't take risks. But with Missy there's always a twist.