Why, MERRY CHRISTMAS TO ALL!
And with the festive mood and everything, BBC gives us the perfect gift to warm up the holidays and keep the anticipation to the highest level. And of course, with all the canonical references from the source material, the writers of BBC Sherlock prove once again that they know what they're doing. 7 minutes...and that's all it took to capture everyone again (not that they ever failed to anyway).
Watch the video below, and enjoy!