19:35Doctor Who (2005–2022)Series 7Episode 3: A Town Called MercyBBC One Duration: 45 minutes Audio described Signed Sat 15th Sep 2012, 19:35 on BBC One South EastAvailable for yearsWatch nowThe Doctor gets a stetson (and a gun!) and finds himself the reluctant marshal of a Western town under siege by a relentless cyborg.ContributorsThe Doctor:Matt SmithAmy Pond:Karen GillanRory Williams:Arthur DarvillThe Gunslinger:Andrew BrookeKahler-Jex:Adrian ScarboroughKahler-Mas:Dominic KempSadie:Joanne McQuinnThe Preacher:Byrd WilkinsAbraham:Garrick HagonIsaac:Ben BrowderDockery:Sean BenedictWalter:Rob CavazosDirector:Saul MetzsteinWriter:Toby WhithouseProducer:Marcus WilsonGenresDramaSciFi & FantasyBrandDoctor Who (2005–2022)SeriesDoctor Who (2005–2022): Series 7 Source: BBC Online