Doctor Who "A Town Called Mercy" Preview Trailer (Season 7 Episode 3)

The BBC has released a preview to Season 7 Episode 3 of Doctor Who, "A Town Called Mercy."

This episode stars Farscape's Ben Browder.

Description:

The Doctor gets a Stetson (and a gun!), and finds himself the reluctant sheriff of a Western town under siege by a relentless cyborg.

Doctor Who airs Saturdays at 9pm ET on BBCA.