Matt Smith Matt Smith

The Doctor has donned his Stetson once again.

In the new Doctor Who Season 7 teaser trailer, which debuted over the weekend at the show's official convention in Cardiff, Wales, we see the Doctor (Matt Smith) with companions Amy (Karen Gillan) and Rory (Arthur Darvill) in what looks to be the Old West... with electricity?

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Fans with sharp eyes will also recognize Ben Browder (Farscape, Stargate SG-1) and at least one Harry Potter adult (Mark Williams aka Arthur Weasley). And is that a Dalek's eye bursting from the snow by the end?

Check out the trailer below:

Season 7 also marks the changing of the guard for the Doctor's companions. Gillan and Darvill will take their leave to make way for Jenna-Louise Coleman. The new season will premiere sometime later this year.