Doctor Who series 10: Steven Moffat's episode guide

Written by Rona Munro, directed by Charles Palmer

“Now you have a choice. You can all keep on slaughtering each other till there’s no one left standing, or you can grow the hell up!”

A long time ago, the Roman legion of the ninth vanished into the mists of Scotland. Bill has a theory about what happened, and the Doctor has a time machine. But when they arrive in ancient Aberdeenshire, what they find is a far greater threat than any army. In a cairn, on a hillside, is a doorway leading to the end of the world.

Next: Episode 11 – World Enough and Time

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