This new series is different from the previous three in that each episode of the earlier ones stood alone, whereas these are to a great extent dependent upon the previous ones and need to be seen in sequence in order to understand how they have developed. DI Doug Kersey has apparently committed an error of judgement and will face the conqeuences. We see how he copes emotionally with this prospect over about three successive episodes and how Charles Wycliffe and Lucy Lane react to him. Later we see Lucy, who has not taken Doug's advice in dealing with another situation, faces the consequences and how Wycliffe behaves when dealing with her. Finally we see Wycliffe himself under some strain from the pompous ass that DCC Stevens, a uniformed senior incompetent officer, puts upon Charles. Stevens appears in several of the episodes and is resented for his interference in matters of which he is ignorant.
The change of direction that this Series Four is much more about the interpersonal relationship between the team of three and makes them seem more believable and real. The actual details of the crime appear to some ectent subservient to the emotional and relationship tensions that exist between anyone working together in these circumstances.
Sadly, yet again there are no subtitles, hence 4 stars instead of five.