"Sherlock" is taking a literal jump back in time for the upcoming Christmas special. Somehow, Sherlock (Benedict Cumberbatch) and Watson (Martin Freeman) will find themselves zapped back one hundred years to Victorian era England, and while it’s not clear yet how showrunner Steven Moffat gets the pair there narratively, it seems they will have a winking good time doing it.
The first teaser for the episode has arrived, with a lot of self-awareness, and a direct reference to "The Hound Of The Baskervilles." It’s likely this is just a fun standalone so don’t expect Watson to have invented an actual time machine, and it looks like this will be a real treat for fans. Check out the first taste of the special episode below. [Vulture]