The secrecy surrounding the premiere date of BBC's "Sherlock" is tight and Sir Arthur Connan Doyle might have also found it difficult to unlock and write this mystery. The third season of the critically acclaimed "Sherlock," starring Benedict Cumberbatch and Martin Freeman, is one of the most awaited seasons of this year and the wait for the fans is getting longer.

According to reports, the third season of "Sherlock" will either premiere on October 31, 2013 or sometime in January, 2014. However, the good news is that "Sherlock" is likely to continue for two more new seasons.

"We've agreed to two more series but I could get into trouble for saying that," Cumberbatch said as quoted The Global Dispatch. "All I know at the moment is I'm doing these three [the episodes of season three] and another three."

In the premiere episode of "Sherlock" Season 3, Sherlock Holmes will be back at the Baker Street. He had faked his death in the Season 2 finale, "The Reichenbach Fall." The premiere episode, "Empty Hearse," will reveal how he did that. The reunion between Sherlock and Watson is not going to be a sweet one.

"Well, there's a reunion that doesn't necessarily go to plan," Cumberbatch had said to The Guardian. "And there's a bonding experience that throws Sherlock and Watson back together in a very firm way."

"Empty Hearse" is loosely based on the original short story by Sir Doyle, "The Adventure of the Empty House." Charles Augustus Magnussen is the new antagonist and Lars Mikkelsen will be portraying the "worst man in London." Also in the new season of "Sherlock," Watson is going to get married and Sherlock is expected to be the best man.

The three stories of Sherlock 3 are: 'The Empty Hearse', written by Mark Gatiss and directed by Jeremy Lovering; 'The Sign of Three', written by Steve Thompson and directed by Colm McCarthy; and 'His Last Vow', written by Steven Moffat and directed by Nick Hurran. The upcoming season will follow the motif 'Rat', 'Wedding', 'Bow'.