I will disagree with some of the other reviews on here, and say I quite enjoyed the first part, which had set a tone for a Scottish Broadchurch, sadly the episodes that have followed have felt a little hollow.
The positives, the location, camera work and atmosphere are totally on point, it's a very attractive show, looks wonderfully vibrant, you will marvel at the scenery, they couldn't fail with that location. The lead, Siobhan Finneran is great, a strong actress with charisma and presence.
On the downside, I find Finneran so good, that she's making some of the rest feel like non entities, some of the characters are so forgettable, they're not making enough impression. Hopefully that will change, Alastair Mackenzie is a fine actor, he's just been underused so far. At times I find it a bit slow, tedious almost, they could have condensed it down to four parts, and removed some of the padding. It doesn't have the hook to retain your interest that Broadchurch managed to gain.
Overall it's watchable enough, and has some tense moments, it just feels like a bit of a wasted opportunity. 6/10