It was one of the best series I have watched in a while. It is of such a compelling high standard but with an interesting twist in the last episode, which brings in the human element. The story line was quite different and shown a different part of policing otherwise never seen before. Dramas from the UK always impress me with the great scenery, even if it is in the middle of London. The cast of Elaine Cassidy as Detective Amy Harris, Emma Fielding Detective Superintendent, Jonas Armstrong as the support detective was well cast and scripted, however I felt that the casting of 'Amy' as such a young detective may be unrealistic, but maybe thats part of the cover.very enjoyable

I really enjoyed this 8 part series, largely due to the lead character's convincing evolution from episode to episode. It is not light stuff, and the good cop bad cop plots tackle serious issues of law enforcement ethics and the slippery morality of undercover "internal affairs" cops. Though the lead good cop, played by Elaine Cassidy, succeeds in most of her missions, the result is rarely satisfying to the character or the audience, as tragically flawed cops get caught in traps and slippery career-minded superiors operate behind the scenes. Cassidy is quite good, creating a character who progresses from gung-ho righteousness to grim determination; she is both manipulated and manipulating.In some ways, the blurry morality and internal affairs theme reminds me of The Shield. For an American who doesn't watch a whole lot of British cop TV, it also provided an interesting insight into police work on that side of the pond. Unfortunately, the photography and editing can be distractingly bad, and yet the excellent acting and thought provoking perspective on police ethics more than make up for technical shortcomings. Kudos especially to Cassidy, who has proved herself an astonishingly versatile actress in recent years.

I was a bit disappointed with this series (I haven't seen the last two episodes though). Most stories were simply too smug relying on the obvious dilemma the theme suggests... and the cinematic means as well as the narrative were always quite pretentious without being convincing, leaving loose ends all around. The distracting look of it, jump cuts and hand-held, "different" to a fault, could not hide the lack of quality in the storytelling. The acting was quite good though - and that made the episodes worthwhile, above all those less "spectacular" subject-wise -, Elaine Cassidy being a standout as usual. I think she is internationally one of the finest actresses around.

In the first episode we follow a police complaints division investigation into brutality accusations at a police station. The drama is shown from the point of view of Amy, a young female officer who's 'collar' is murdered in an interview room. As she tries to clear her name during the 'lock-down' no-one can be trusted, and the division between right and wrong blurs remarkably. This is a well made TV drama that shows off the talents of Elaine Cassidy well. My only gripe is that the makers had the chance to break the mould for this kind of drama and chose not to do so. Too many drama series produced today make use of the narrative style of showing things from the viewpoint of a single central character; it has become a writers cliché. The obvious conclusion of the first episode was that Amy was going to join the undercover squad after showing her mettle; she gave such a strong performance right from the outset that it became a foregone conclusion. How much more intriguing (and difficult) it would have been had they used the tension created during an internal investigation by showing it from the point of view of the people it affected, moving on to a new investigation and new central character each week.