Finally! The wait is over for “Sherlock” Season 4, or at least you’ll know how long you still have to wait.

Yes, the master of deduction will be back for its fourth installment but fans will have to wait a little bit longer.

“Sherlock” co-creator Steven Moffat confirmed that season four of the BBC hit series will be back in January 2017.

Why the long interval?

Moffat cited “quality” as the main reason. He explained to IGN: “You know, we’ll do what we can, but with no sacrifice in quality—that’s the thing. If people have to wait two years, they’ll have to wait two years.”

“Sherlock” season one debuted in 2010, and then season two followed in 2012. Season three of Benedict Cumberbatch-fronted series premiered in 2014 and just concluded its run in the US on PBS.

Showrunner Mark Gatiss also revealed that he is gaining progress in developing the upcoming season. In fact, he already finished writing its first episode, Entertainment Weekly reported.

However, Gatiss remained mum about the storyline of season four.

“Well, it’s some more adventures. Ha ha!,” the writer chuckled. “All I can say is, this is a major, life-changing series for the regulars. The repercussions of Moriarty’s apparent return are far-reaching. It’s very big stuff,” he added.

Meanwhile, Moffat told Collider in an earlier interview that season four of the TV adaptation of Sir Arthur Conan Doyle novel is set to start filming in April 2016.

“I think we’re shooting next year, April-ish,” he said.

Apparently, the actors’ busy schedule and demand for films made the scheduling becomes difficult for “Sherlock.”

The show’s main actors, Cumberbatch and Martin Freeman, have already signed up for season four.

Although Cumberbatch is busy for his Marvel movie, “Doctor Strange”, he will definitely reprise his role as Sherlock Holmes. Freeman, on the other hand, also got himself sucked in the Marvel Cinematic Universe with a role in “Captain America: Civil War”. But he was also certain to return as Sherlock’s friend and confidante, Dr. John Watson.

“Sherlock” Christmas special, meanwhile, will be shown on New Year’s Day on BBC1 in the UK and PBS Masterpiece in the US, as well as some theaters worldwide.