So many others have described in depth the pros, plot and very "real" characters in this enjoyable and unusual police drama. It doesn't fit into the usual mold of a "cosy" detective show like Midsommer Murders, Miss Marple or Shakespeare and Hathaway but nor does it have the more realistic bite of something like Inspector Frost, Morse or Lewis. It's certainly NOT Luther. It is refreshingly in its own genre and I grew to invest in all the characters who were superbly acted and very "real". I enjoyed the 2 plot lines as they neither too complicated nor too easy to guess. I really enjoyed the "maid's" character and feel terribly cheated by what will never be a resolved cliffhanger. Bad form, ITV, for cancelling the show.