Sherlock Season 4 won’t premiere for another six months or so. But rumors already suggest that the upcoming season will be the show’s final one. The series has only had less than a dozen episodes in the past. Will the hit BBC One show really end sooner than most fans expect?

The show’s lead actor, Benedict Cumberbatch, has had a lot on his plate recently, though. His first Marvel film, Doctor Strange, will hit the big screen on November 4. He also has several voice acting gigs lined up for the next couple of years. He will voice Shere Khan in 2018’s The Jungle Book. He will also play the Grinch in the upcoming Dr. Seuss’ How the Grinch Stole Christmas! 

Is Cumberbatch now too busy to return to playing the titular role in Sherlock? Will the show end because the actor has quit? Has he chosen to focus on his film career instead?

Cumberbatch fans need not fret, though. The actor will still return for the show’s next season. He has not quit either. However, series creator and Cumberbatch’s co-star, Steven Moffat, did hint that the show’s next installment might very well be its last. “I don’t know how long we can keep it going.” he said in an interview with The Telegraph.

Moffat would personally be willing to write more seasons for the show. However, he does admit he’s “hardly the main draw” when it comes to renewing the series for another season. “I would be moderately surprised if this was the last time we ever made this show,” he added. “But it absolutely could be.”

Producers have yet to announce the title of the first episode of the show’s fourth season. However, filming for the series has already begun last April.

Sherlock Season 4 will return to BBC One come January of next year.