The BBC has released two trailers for the ninth episode of Doctor Who‘s new season, titled ‘Flatline’.

Written by Jamie Mathieson, the episode 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 trailers…

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…