Doctor Who: ‘A Town Called Mercy’ teaser clip: Meet the Gunslinger

Take a look at the teaser clip for ‘Doctor Who’ series 7 episode 3: ‘A Town Called Mercy,’ as we meet Gunslinger – a cross between a cowboy and The Terminator.

‘A Town Called Mercy’ airs on BBC One on Saturday 15 September at 7.35pm.

Watch the clip below…