![](https://insidemediatrack.com/wp-content/uploads/2012/09/2234307-doctor-who-series-7rs.jpg)
Following on from the episode picture gallery for ‘Doctor Who’ series 7 episode 4 : ‘A Town Called Mercy,’ take a look at the behind the scenes pictures.
The episode airs on BBC One Saturday 15 September at 7.35pm to 8.20pm
Just click the images to enlarge
© BBC