Ever since the BBC released the image of Benedict Cumberbatch and Martin Freeman as their Sherlock characters in 19th century clothing (as seen above), fans have been dying to know what the reason is for the archaic duds in the upcomingSherlock Christmas episode. Are the titular detective and his partner John Watson at a costume party? Is this some kind of dream? Have the duo been thrown into the past by a temporal wormhole (which would make for a great Doctor Whocrossover)? Well, we finally have the answer: it’s an out-of-continuity story!