Peter and Pearl Introduce Oxygen (documentary)

Peter and Pearl Introduce Knock Knock was a documentary detailing Series 10. It was part of a series of documentaries about series 10 of Doctor Who.

Main subject
Peter and Pearl talk episode 5 Oxygen and discuss how it's a truly scary story set at a mining station in space with an economic strategy gone wrong, Bill has some pretty serious stuff to go through and they're facing an enemy that it takes a while to realise what is.

People interviewed

 * Peter Capaldi
 * Pearl Mackie