Karen Gillan, Arthur Darvill and Matt Smith

Drop your guns! The Doctor has found his Stetson again.

On the next Doctor Who (Saturday, 9/8c, BBC America), the Time Lord and his companions head back to the Old West in "A Town Called Mercy." Despite its name, the townsfolk don't seem to take to The Doctor all too kindly.

VIDEO: Doctor Who's Matt Smith gives clues about the Ponds' farewell

Check out the exclusive first look at the Episode 3 trailer, which features a firepower-heavy gunslinger (Farscape's Ben Browder) laying down the law and the always mouthy Amy Pond.

Doctor Who airs Saturdays at 9/8c on BBC America.