‘Sherlock’ Season 4: Are Things Getting Serious? Is This The Last Season?

"Sherlock" Season 4's trailer is here! It reveals that we have to expect things which are darker and more serious to appear in the show.

The new season of "Sherlock" will be telecasted only in 2017. But, the trailer that is released is going to give us a peep into Season 4. At the San Diego Comic Con, the panel decided to give something that the fans can base their anticipation on.

A new trailer of "Sherlock" Season 4 shows stars Benedict Cumberbatch and Amanda Abbington. The stars along with the executive producers Mark Gatiss, Steven Moffat and Sue Vertue released the new trailer.

Is Sherlock looking more worried in the trailer of 'Sherlock' Season 4?

The trailer of "Sherlock" season 4 features the return of Moriarty. It also showed Sherlock who looked more perturbed than he ever was. What was the reason for his worry? This was not revealed at all. The fans have to wait and watch what the cause of his anxiety was, reported E Online.

A sneak peek 'Sherlock' Season 4

The panel did not reveal anything about the show or any plot lines at the comic con, reported C Net.

Things are getting rather serious. The level of tension is kicked up a notch in the upcoming season 4 of "Sherlock."

"It's really dark," Abbington said. "it's the darkest Steven and Mark have written...If we can pull this off, then it's amazing."

At the same time the show has kept its humor element intact. The hilarious as well as cheeky moments of Sherlock won't be missed. It is definitely going to be included. It was promised that the show will never cut the jokes.

"There are moments in this series where it does get looser," promised Cumberbatch.

Will 'Sherlock' Season 4 Be the Last?

"We can exclusively reveal that there will not be a series five...but there will be a series six," Mark Gattis said. Now, what does that mean?

Sherlock Season 4 is to air in 2017 in BBC and PBS. "Something's Coming!"