"Luther" is officially back in production. The show's official Twitter account tweeted a photo of series star Idris Elba to announce that Season 3 is now underway.
And the Luther 3 shoot begins... twitter.com/bbcluther/stat…
— BBC Luther (@bbcluther) November 19, 2012
Season 3 will have four episodes, described in the BBC teaser as "perfectly dark, chillingly-formed."