They say that huge portions of any one thing can spoil it and this is particularly true in case of Sherlock. The BBC show has kept its fans waiting for a long time now and we finally got a sneak-peek of what it has in store for us.

The third season ended with Jim Moriarty announcing his grand return. And of course, this did nothing more than fuel the conspiracy fires on the internet. We got a new Sherlock fix on New Year’s Day 2016 with a holiday special, but it left us with more questions than answers.

BBC dropped a teaser trailer for the 4th season in July, but they shared it again on Facebook a few hours ago, and it's going viral again.

Here it is:

ALL ABOARD THE HYPE TRAIN!