Sherlock co-creator Steven Moffat recently revealed some information on the popular British series that could excite fans wanting more and more of the show.
Sherlock is known for having only three 90-minute episodes per season, which is significantly less than many popular drama series, but Moffat thinks that this will allow the show to be on the air for a long time.
"Had we done the conventional form of a TV series which is to do runs of six or twelve, it would be over by now without doubt, it would be finished," Moffat said in a new interview with The Guardian. "Because [the cast] would never again commit that amount of time that regularly to a TV show, they just wouldn't, why would they?"
Cumberbatch and Freeman have turned into relatively big movie and TV stars worldwide. Freeman plays lead character Bilbo Baggins in the Hobbit franchise while Cumberbatch has appeared as a villain in many big movies, from Star Trek Into Darkness, to the second Hobbit movie, The Desolation of Smaug.
Moffat said that because Sherlock only gets the cast and crew together ever two-and-a-half years to film three episodes, this allows the show to possibly be on the air for "a very long time."
Discussing Sherlock's popularity in America, Moffat likens it to the inherent British qualities of the production.
"I think that the way that you appeal to other cultures is to be your own culture, just be yourself," he said. "Americans like British shows - if they elect to watch a British show they want it to be terribly British, why wouldn't they? It's a cheap way of taking a holiday abroad."
Sherlock Season 4 does not currently have a release date, though based on the scheduling of the first three seasons, it will likely come out in Britain and America in 2016.