'Sherlock' Special Episode Spoilers, News: Special Segment Will Be Set in Victorian Era

British broadcaster BBC One previously released a photo showing "Sherlock" mainstays Benedict Cumberbatch and Martin Freeman sporting clothes reminiscent of the Victorian era.

The news set off Sherlock fans to speculate if the image teaser suggests that the popular detective show would now delve with time travel or that the cast is simply doing some cosplay.

To clear off the confusion, Sherlock co-creator Steven Moffat speaks with Entertainment Weekly confirming that followers of the show will see a totally different timeline for its December special.

Moffat clarified that the upcoming special segment will take the beloved characters back to Victorian London. He further said that it would not be a part of the series' forthcoming season 4 which, as reported, will likely to kick off in "early 2016."

"The special is its own thing. We wouldn't have done the story we're doing, and the way we're doing it, if we didn't have this special. It's not part of the run of three episodes. So we had this to do it – as we could hardly conceal – it's Victorian. [Co-creator Mark Gatiss] and me, we wanted to do this, but it had to be a special, it had to be separate entity on its own. It's kind of in its own little bubble," Moffat said.

Speaking about the fourth season, a report from Screen Rant confirmed that the trio episodes are already in the works and this might see some reduction of cast members.

"We have a plan … we practically reduced our cast to tears by telling them about the plan," Moffat previously said during the 2014 Emmy Awards.

"Sherlock" Christmas Special is expected to air in the U.K. in December.