Filming “Sherlock” has begun. BBC has already started working on first of three new feature-length episodes starring Benedict Cumberbatch and Martin Freeman, as the makers look forward in replicating the magic on the screens again.

Sherlock which is produced by Hartswood Films is written and created by Steven Moffat and Mark Gatiss. The famous show is “inspired by the works of Sir Arthur Conan Doyle,” notes the Guardian.

According to sources, the BBC also released a photo on Wednesday of Gatiss “holding a clapperboard for the first episode featuring Rachel Talalay’s name.”

Moffat and Gatiss said: “Sherlock series four – here we go again! Whatever else we do, wherever we all go, all roads lead back to Baker Street – and it always feels like coming home. Ghosts of the past are rising in the lives of Sherlock Holmes and John Watson bringing adventure, romance and terror in their wake. This is the story we’ve been telling from the beginning. A story about to reach its climax …”

Yes, the series is set to make history. The fourth season will feature Rachel Talalay as the first female to ever direct a “Sherlock” episode.

The Guardian reports, Rachel has already directed “Doctor Who”, “The Flash” and “The Wind in the Willows” “in a 25-year career in film and television, is to direct the first of the three feature-length episodes for BBC1.”

“Sherlock: The Abominable Bride” garnered huge popularity and remained the most-watched programme over the New Year’s Eve with 11.6 million viewers.

In a statement, Cumberbatch said: “I can’t wait for everyone to see season four. But you will have to wait … though not for long … And it will be worth it.”

The Guardian wrote about Rachel, “Talalay has enjoyed an eclectic career with credits including ‘Tank Girl’, ‘Freddy’s Dead (Nightmare on Elm Street 6)’ and more than 75 hours of television in the US, the UK, and Canada from ‘Ally McBeal’ to ‘Without a Trace’ and ‘Touching Evil’. She has also produced films including ‘Hairspray’, ‘Cry-Baby’, ‘Nightmare on Elm Street (parts three and four)’ and ‘The Borrowers’.”

We can’t wait to get a glimpse of the fourth season. Stay tuned for more updates about the show.