Producer Sue Vertue teased Sherlock fans today with an image of Benedict Cumberbatch and Martin Freeman in Victorian garb as they begin work on the 2015 Sherlock special.
![John's mustache makes a comeback.](https://www.theworkprint.com/wp-content/uploads/2014/11/B3TTRwbCIAIx6UP.jpg)
In addition she’s also posted the script cover page for the upcoming episode:
This is what we’ve been doing today! Later on a pic of Sherlock and John as they’ll appear in the Special #221back pic.twitter.com/Aq4vncKpKy
— sue vertue (@suevertue) November 25, 2014
In a recent interview with the Radio Times, co-creator Mark Gatiss revealed that fans should expect tragedy, adventure and devastation in series four.
“It should be clear by now that while, of course, Doyle is our absolute god, we have gone quite a long way away as well – we’ve introduced Sherlock and Mycroft’s parents [for instance], I don’t think they’ve ever been seen in any adaptation – so there are lots of surprises to come,” said Gatiss.
Let the speculation commence!
Image via Sue Vertue/Twitter.