Doctor Who series 10: Steven Moffat's episode guide

Written by Mark Gatiss, directed by Wayne Yip

“It’s a simple choice, Iraxxa. The oldest one in the book. We must live together. Or die together.”

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 awakes 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?

Next: Episode 10 – The Eaters of Light

Read more in the new issue of Radio Times magazine, with interviews with Peter Capaldi, Pearl Mackie and much, much more