I'm torn on this one. It was definitely worth the watch but, like The Bridge / Bron/Broen which was also from the same creator as this, it doesn't come together in the end. The finale is better than Borgen, which completely fell apart but there are a lot of loose ends, one especially that turns out to be a huge red herring that inexplicably just was never brought up again.
The show stars Anna Friel as a cop with a screw loose (or possibly, many screws loose.) She hunting a serial killer, who may be connected to a case that she was unable to solve in the past. The cast is top notch and, in case you watch - yes, that is the Targaryan brother and yes, that is the dude from Battlestar Galactica.
It's not a much watch but I think it's better than The Night Manager (the appeal of that one escapes me) and is definitely worth tossing onto your queue for the future. It's only 8 episodes so it's a pretty easy binge or something to watch while working out or traveling.