I have watched over 30 Such Shows. They all share common things apart from murder and mystery. This was no different with vulnerable cops with a past and ties to murder investigation. Starts off as a regular who killed the Girl found in the woods. Then after 1st Episode just drags on. Past, Demons inside Head, etc.
There are some really good moments in between but something seems off. Show really redeems itself in last 2 Episodes. To an extent that there is a Shock value and disbelief coupled by some really great acting. Good editing could have made it a more compact 6 Episodes. Its the last 2 hours that make the show worth watching. Production Values are good. Acting is top notch. The Police Chief(Varys from GoT) is excellent. There's tonnes of Irish-English banter and some cracking one-liners. The atmosphere is mostly dark. The leads pull off a good performance but the lady cop character is bit off a let down. Apart from that Show is worth watching if you know how to skip meaningless content in between