Doctor Who series 10: Steven Moffat's episode guide

Written by Jamie Mathieson, directed by Charles Palmer

“You only see the true face of the universe when it’s asking you for help.”

The Doctor, Bill and Nardole answer a distress call in deep space, and find themselves trapped on board space station Chasm Forge. All but four of the crew have been murdered – and the dead are still walking! In a future where oxygen is sold by the breath, and space suits are valued more highly than their occupants, the Tardis crew battle for survival against the darkest evil of all.

Next: Episode 6 – Extremis

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