Sherlock producer Sue Vertue has tweeted a picture of Benedict Cumberbatch and Martin Freeman in classic Victorian costume for the one-off special in 2015 accompanied by the hashtag #notkidding.
The cast and crew assembled today for the first read-through.
— sue vertue (@suevertue) November 25, 2014
Filming for the special is expected to begin in January. Filming for the fourth series will begin later in 2015, with plans to broadcast in 2016. Steven Moffat has promised an emotional fourth series.
I do think our plan is devastating. We practically reduced our cast to tears by telling them the plan. Honestly, Mark and myself are so excited with what we’ve got coming up, probably more excited than we’ve ever been about Sherlock. … Honestly I think we can [top the last season].