With all the mania surrounding BBC's Sherlock, two new people involved in the production have expressed their support of fans who come to watch them film.

'Sherlock' Star Benedict Cumberbatch Reveals How He 'Painstakingly' Remembers His Lines

Sherlock is well-known for hundreds of fans coming out to watch the production process, which usually involves Benedict Cumberbatch (who plays Sherlock) and Martin Freeman (Watson). While Freeman has suggested in the past that it can be a bit exhausting, costar Louise Brealey (Molly Hooper) and executive producer Beryl Vertue were enthusiastic about the phenomenon.

"It didn't used to be like that," Brealey explained to RadioTimes.com recently. "When we did the pilot in the first series, we didn't have any friends come to see us. But do you know, they are absolutely wonderful. They're so considerate and sweet."

Speaking on the upcoming Sherlock holiday special, which is apparently Victorian-themed, Vertue simply revealed that it is "different" from what came before.

"All we can say is it's period. And that's different," she said.

"We're not allowed to say anything more than Beryl said," Brealey added. "We're no good to you at all. Can we go and have a drink now please?"

Feeman previously said that he didn't "love" the crazy fan environment while he was trying to film.

"When we're [filming at] our stand-in for Baker Street, it is hard to do your job. And I don't love it," he admitted, adding "It's like trying to act at a premiere. ... I wasn't in The Beatles. But I've never seen anything like it. There's such a heightened sense of excitement, so every time we come out, there's applauding - and it's like, 'No, can you n-.' Or, if we do anything - 'Cut!' - applause. ... It's like, 'No, this isn't a gig.'"

The Sherlock holiday special is expected to air in the winter, with season 4 expected for early 2016.

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Sherlock, Television, BBC, PBS