Broadcast: Saturday 18th May 2013
10:00am EDT (14:00 GMT) < > « »
CTV Sci-Fi Channel

Featuring: Matt Smith, Arthur Darvill, Karen Gillan, Ben Browder, Garrick Hagon, Adrian Scarborough

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.
Synopsis Source: SPACE episode listing