BBC releases trailer for ‘Sherlock’ Christmas special – watch

Benedict Cumberbatch and Martin Freeman head back to Victorian London

The BBC has released a trailer for the forthcoming Sherlock Christmas special.

The self-contained special takes Benedict Cumberbatch’s Sherlock Holmes and Martin Freeman’s Dr. John Watson back to Victorian London, where they will attempt to solve an “impossible case”. It’s the first episode of the BAFTA-winning drama not to be set in the present day.

Discussing the episode recently, Sherlock‘s co-creator Steven Moffat described it as a “separate entity on its own” that’s “kind of in its own little bubble”.

The BBC has yet to announce an air date for the Victorian special, but it will be some time during this year’s Christmas TV season. The episode will also be screened at select cinemas across the world on a date close to its TV transmission.

Following the self-contained special, Sherlock will return to the present day for a new series of three episodes, which is due to start shooting in early 2016. The show’s co-creator Mark Gatiss has recently confirmed that he and Steven Moffat hope the continue the series for “as long as we can”.