The following article contains details about The Empress of Mars that some readers may wish to avoid.
The BBC has released the official synopsis for The Empress of Mars, the ninth episode of the currently-airing tenth series of Doctor Who.
The Doctor, Bill and Nardole arrive on Mars, and find themselves in an impossible conflict between Ice Warriors… and Victorian soldiers. As the Martian hive awakens around them, the Doctor faces a unique dilemma – this time the humans, not the Ice Warriors are the invaders. When Earth is invading Mars, whose side is he on?
The Empress of Mars airs on Saturday 10th June on BBC One, broadcast time to be confirmed.