Like a lot of shows I gave up on this when it first came out finding it too slow. Not sure what that says about me but probably something! Low attention span maybe. I just came back to it and I'm glad I did, I actually watched from the start again and this time it hooked me. I found some parts a bit-by-the-book, for example there is always a new detective in town. But I kept with it and found it quit clever the way all the back stories came together in the end. The setting is also quite atmospheric if familiar to a lot of British crime mysteries, there's always an eerie landscape to creep you out!