703. A Town Called Mercy
Source : Doctor Who @ BBC First aired 15 September 2012. In this third episode of the seventh series, The Doctor inadvertently travels to wild-western America with Amy and Rory where they encounter some things that don't quite make sense. Things like electric lights in Mercy village's main street years before they were even invented, for instance. Source : Radio Times As we find out, there is another person in the village who calls himself a Doctor. This doctor turns out to be an alien named Kahler-Jex who crash-landed on Earth about ten years ago. When our Doctor investigates the strange alien doctor, it is revealed that this Doctor is actually a criminal who was once part of a team who experimented on volunteers to create an army of cyborgs who either died or killed countless people... And the one remaining cyborg is waiting for the townspeople to hand over the doctor so he can stand trial. Right then and there... In a story that can pretty much only happen...