BBC One has released a clip from the next episode of Doctor Who.

Written by Jamie Mathieson, ‘Flatline’ airs on Saturday 18 October on BBC One and is described by Steven Moffat as “a horror story” and “a proper scary one”.

Watch the clip…

The official synopsis reads: “Separated from the Doctor, Clara discovers a new menace from another dimension. But how do you hide when even the walls are no protection? With people to save and the Doctor trapped, Clara comes up against an enemy that exists beyond human perception.”

> Here’s everything we know so far about Season 8.

Are you looking forward to ‘Flatline’? Let us know below…