The beginning of the end for Doctor Who as we know it will kick off this fall.

Karen Gillan (Amy Pond) and Arthur Darvill (Rory) will both depart the series after the opening five episodes of the season, making room for Jenna-Louise Coleman as the doctor's new companion.

How will these characters be written out? Producer Steven Moffat has teased at least one death on the way, but fans will simply need to tune in and see... the gang head to the wild west? Apparently, based on the first official BBC trailer for season seven. Check it out now:

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.