‘Doctor Who’ series 7 episode 3: ‘A Town Called Mercy’ airs on BBC One on 15 September at 7.35pm to 8.20pm.
The Doctor gets a Stetson (and a gun!), and finds himself the reluctant Sheriff of a Western town under siege by a relentless cyborg, who goes by the name of the Gunslinger.
But who is he and what does he want? The answer seems to lie with the mysterious Kahler-Jex, an alien doctor (yes another one!) whose initial appearance is hiding a dark secret.
The episode is written by Toby Whithouse, Executive produced by Steven Moffat and Caroline Skinner, Producer is Marcus Wilson and Director is Saul Metzstein.
Just click on the images to enlarge