![](https://insidemediatrack.com/wp-content/uploads/2012/09/2482563-doctor-who-series-7rs.jpg)
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…