Latest ‘Sherlock’ trailer confirms title and air date of special episode; season 4 is on the way

"Sherlock" showrunner Steven Moffat hesitated in labelling the series' Victorian special episode a Christmas special when its trailer was released, and rightfully so since the episode's release date will be after Christmas.

BBC confirmed in a new trailer that the episode will air in the U.S. and UK on January 1, 2016 with the title, “Sherlock: The Abominable Bride.” The new trailer is essentially the same as the last one, save for the announcement of the release date and the title of the one-shot episode.

For those who are keen to know the plot of the Victorian special, PBS' official description reads:

“Benedict Cumberbatch (The Imitation Game) and Martin Freeman (The Hobbit) return as Sherlock Holmes and Dr. Watson in the acclaimed modern retelling of Arthur Conan Doyle’s classic stories. But now our heroes find themselves in 1890s London. Beloved characters Mary Morstan (played by Amanda Abbington), Inspector Lestrade (Rupert Graves) and Mrs. Hudson (Una Stubbs) also turn up at 221b Baker Street.”

Aside from the trailer, a few photos from the set of the special episode of “Sherlock” have also been released. The photos provided by PBS can be seen on the official website of "Sherlock."

Meanwhile, Moffat and co-producer Mark Gatiss said that Season 4 of the modern “Sherlock” is already mapped out. According to BBC One, the duo is already writing episodes, and filming for the next season will start next spring.

At the Royal Television Society event, Moffat and Gatiss told The Hollywood Reporter that the fourth season of “Sherlock” will potentially add more female characters and will likely increase the roles of the women who are already in the series.

The show’s Season 3 finale aired back in 2014. The premiere of the fourth season is yet to be announced.