Element-hairy, my dear Watson!
Filming is now underway on the #Sherlock Special, coming to @BBCOne in 2015. pic.twitter.com/sirTNafRh3
— BBC One (@BBCOne) January 6, 2015
I'll be collecting pics of S4 setlock here, starting with the Sherlock Special. They'll be masked in most cases because they are spoilers.
I don't consider certain things to be spoilers, however. The venues where they're filming. Official news from the cast and crew.