Sherlock EP Steven Moffat and PBS’s Masterpiece chief Rebecca Eaton worked like gangbusters this morning, for the better part of an hour, making sure to convey no actual information about the Sherlock one-off special, which will be set in the Victorian era. Though it’s been widely reported the program will be a Christmas special in the UK, and a trailer of what has been described as such was screened at Comic-Con (watch it below), Eaton and Moffat steadfastly declined to…