I've always liked Idris Elba - maybe it's because of The Wire or maybe because his screen presence is so compelling. When our TVs schedules are filled with so much dross to have this little gem of a series appear is so (Idris Elba) is a Detective Inspector in a Special Crimes Unit who has just returned to work after having recently recovered from a mental breakdown due to pressures of a marriage break up and over commitment to his job. His relationships with his ex-wife, his new colleague DS Ripley and a psychopathic but brilliant young lady are central to the development of the series. Each episode leaves one wanting to know how the plot will develop. There are of course the crimes to be solved and Luther's unorthodox but canny methods.
I will not divulge any more but the climatic ending to episode 6 makes one want to know 'what now?' I strongly recommend Luther who anyone who appreciates 'quality' television drama.