Correct me if wrong, but I'm pretty sure that LUTHER is the first British TV crime drama series with a black detective at its centre (THE SHADOW LINE a much shorter series came after) and in this sense LUTHER breaks new ground. British TV crime drama has been lagging behind British soap operas and hospital dramas in its use of black actors in prominent roles, but has now thankfully got its act together and moved ahead with the multicultural times. The plotlines of LUTHER are a bit creaky sometimes and stretch the bounds of believability, but it's so refreshing to see a black actor, and a very good black actor in Idris Elba, giving a powerhouse performance to drive along the action. As a character, John Luther is not especially innovative - he's the familiar lone wolf, troubled type who bends the rules to see that justice is finally done. Not much, if anything, is made of John Luther's ethnicity in the two series, and that doesn't matter too much because he's there, a black man doing all the difficult investigative stuff that white TV detectives usually do. Anyway, the show is entertaining and it opens the gates for new crime dramas to make more of Britain's many talented black and ethnic minority actors in prominent roles. In future, I hope to see a British-Asian detective at the centre of a crime drama. Diversity is the way forward.