The Fall (2013)

This is not your average crime investigation show.

It yet may be one of the best crime investigation shows ever made. Decently paced, meticulously accurate in terms of csi work as seen on the best shows without big spectacle or fuzz. More character building than most comparable shows. However, 2 episodes in and the criminal side gets way more screen time than I personally am comfortable with. The edit and screenplay underline the cruelty perfectly - nothing for overly sensitive people. There's just some sides of humanity no one should be entertained by, but the writers don't hold back any punches. (I also didn't watch more than one black mirror episode at a time for the same reason)
If you're good with blatant display of cruelty you should definitely try the pilot. I'm still not sure how far I will be getting into the series, but if the beginning is an indicator of how well-made the show turns out, it's a clean recommendation.