'Sherlock' Season 4 to begin filming in April 2016 (probably)

Steven Moffat has confirmed that the fourth season of Sherlock is finally getting closer to production.

Moffat told Collider: “Mark [Gatiss] will be starting [to write] very soon. He may have started. I’ve got to finish my Doctor Who Christmas special, and then I’ll be straight onto Sherlock after that.”

He added: “We haven’t started, but we’ve planned. We know what we’re doing. Haha. Or we think we know what we think we’re doing. There are a couple of things we’ve got lined up that are really quite strong surprises, but we’ll see.”

> Here’s everything we know about Season 4 so far.

Asked when the new season is expected to begin filming, the writer said: “I think we’re shooting next year, April-ish.”

> Buy the complete Season 1-3 boxset on Amazon.

Season 3 began filming in March 2013.