Trailers: Doctor Who‘s ‘Cold War’

The Doctor and Clara find themselves with a deadly alien on board a nuclear submarine in Saturday’s new episode.

The episode sees the return of a classic Doctor Who foe, the Ice Warriors.

Check out the trailers:

Preview Scene:

Behind the Scenes:

Doctor Who airs Saturday nights on BBC One and BBC America. For more on the new season, head over to SciFi Stream’s Doctor Who series guide!