Mark Gatiss and Steven Moffat tease ‘Sherlock’ season 4

It might be going darker say the writers

Writers Mark Gatiss and Steven Moffat have teased fans with story details for Sherlock‘s fourth season.

Speaking at HBO’s Emmy Awards after-party Gatiss said the writing duo had a good set of ideas that might see them taking the show in a “darker” direction.

According to Entertainment Weekly Moffat is confident they can match the success of the show’s last season: “We have a plan to top it. And I do think our plan is devastating. We’ve practically reduced our cast to tears telling them the plan… We’re probably more excited than we’ve ever been about Sherlock.”

Gatiss also revealed: “We’re going to try to take it somewhere we’ve never been before – and I don’t mean outer space… It will be a challenging place to go. We always start with a re-introduction that builds toward a darker climax.”

Filming begins early next year with a Christmas special to air in 2015 followed by a three-part run of episodes in 2016.

BBC One drama Sherlock scooped a surprise awards haul at the US Primetime Emmys in Los Angeles on Sunday. During an evening where Breaking Bad dominated, Benedict Cumberbatch and Martin Freeman won best actor and best supporting actor in a mini-series while co-creator Moffat collected the award for outstanding writing.

Benedict Cumberbatch has recently finished filming Boston gangster drama Black Mass with Johnny Depp and has been announced as the voice of tiger villain Shere Khan in Jungle Book: Origins.

Martin Freeman will be seen next on the big screen in Peter Jackson’s The Hobbit: The Battle of the Five Armies released in cinemas December 12.