• Benedict Cumberbatch attends 'The Children's Monologues', Danny Boyle's production inspired by children from rural South Africa in aid of his charity 'Dramatic Need' at Royal Court Theatre on October 25, 2015 in London, England.

Benedict Cumberbatch attends 'The Children's Monologues', Danny Boyle's production inspired by children from rural South Africa in aid of his charity 'Dramatic Need' at Royal Court Theatre on October 25, 2015 in London, England. (Photo : (Photo by Tristan Fewings/Getty Images))

BBC's Sherlock Season 4 is all set to hit the small screen, but reportedly, Benedict Cumberbatch has already given up to the series, causing speculations that the upcoming fourth installment is going to be its last.

In an exclusive with The Telegraph, "Sherlock" Season 4 executive producer Steven Moffat has revealed some interesting facts about the imminent fourth installment of the series. According to the series executive, he is very much honored to have Benedict Cumberbatch and Martin Freeman.

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Steven Moffat has also revealed that both Benedict Cumberbatch and Martin Freeman received their roles in "Sherlock" Season 4 to bring satisfy to their fans and not because of the fat pay check offered to them. The executive producer has also stated the two lead stars of "Sherlock" Season 4 really love their roles.

Some sources claim that Benedict Cumberbatch will not be filming another instalment after "Sherlock" Season 4 as he is reportedly going to be busy working on the "Doctor's Strange" movie. On the other hand, Martin Freeman is expected to shoot for the "Black Panther" movie.

However, these reports have not been officially noted by Benedict Cumberbatch nor Martin Freeman yet.

Moffat also addressed that "Sherlock" Season 4 will be the last and final installment of the series. He said that he does not know until when the show will be airing.

"I'm personally willing but I'm hardly the main draw," "Sherlock" Season 4 executive producer Steven Moffat told The Telegraph as reported by Sydney Morning Herald. "I would be moderately surprised if this was the last time we ever made this show."

Reportedly "Sherlock" Season 4 could head to a hiatus leading to any death between Benedict Cumberbatch and Martin Freeman's characters. Although it is definitely dependable on the stars' availability to do and film for the series again.

"Sherlock" Season 4 is set to air in 2017.

Benedict Cumberbatch can't say 'Penguins' - The Graham Norton Show on BBC America, watch below