And while we don’t know what the monsters in “Oxygen” will be, Moffat raved to Doctor Who Magazine about the episode, saying “it’s like the best of ‘old’ Doctor Who meeting the best of ‘new’ Doctor Who.”
Capaldi’s favorite Doctor Who villains, the original Mondasian Cybermen, will help close out Season 10, appearing in Episodes 11 and 12.
“Bill is someone who asks the questions that nobody has asked for 53 years,” Moffat told Doctor Who Magazine.
“[She has the] irreverence and cheek to ask all the questions you’re not supposed to ask on Doctor Who.”