This series is difficult to properly review. I think that it was worth watching, simply because the storylines in the two seasons (so far) were complex, and it was intriguing enough that you wanted to see where everything ended up. I won't delve into either of the main stories, but each involved a complex number of characters, and you were never sure where things might go next. Again, all that was worth the trip.
It also had what I thought was a solid cast of actors, who carried their performances as convincingly as they were written. The problem with this whole series is that whoever wrote it (or maybe it's a directorial issue) seems to have never been exposed to any actual police-related activities. I realize that the main character has intentionally been written to be non-conventional, but nobody who goes as rouge as she does, all through the series, would ever be allowed to continue to be active in any large police organization. You quickly begin to lose count of all the (really) stupid/wreckless things that she does, not only endangering herself, but all of those around her, and yet, despite some occasional scoldings, her superiors just continue to let her run amok.
So, again, I am glad that I watched the series, simply because the stories were interesting. I recommend the series for that alone. But you need to be prepared to suspend your beliefs with regard to how the main character has been portrayed, and if you can't live that, then you might has well not watch it at all. (Again, no fault of the actor, as she's obviously just portraying what was written, or how she was directed.)