Benedict Cumberbatch in and as Sherlock Homes of the victorian age.Who would not jump off the bed to catch the first look of the special episode that the creators Mark Gatiss and Stephen Moffat are offering the viewers before the start of the fourth season this year.

Savour it till the special episode airs in December 2015.This episode will be the 0th episode of the fourth season ,which will air some time next year or even later.Till then,refresh the first three seasons ,multiple times.