Here's a calendar date for you: the
Bath Chronicle recently published details of a letter sent to residents of the area surrounding Queen Street in Bath, informing them that filming is due to take place on the BBC series on Monday the 2nd of February, when Queen Street will be decorated "in a Victorian theme".
The canny folk on the
#setlock hashtag have discovered a couple of casting calls from
Mad Dog Casting, a company that has previously provided supporting artists for
Sherlock, that may give us a clue as to the content of the Special. A call for male mime artists and physical theatre specialists went out for "an incredibly popular returning BBC drama that will be filming in Bristol in the first weeks of January", and was reiterated last week with a notice specifying that it was "a BBC detective series". That seems fairly unequivocal, we'd say.