The Shetlands mysteries are consistently constructed on very detailed and extremely well-constructed plots, They WILL have you on the edge of your chair and debating clues/developments with your friends. No trite or predictable dialogue--and after a few episodes, you'll likely become part of that remote and fascinating part of the world. The camera work is superb, and the scenery is breathtaking. A consistently great cast in each series-- .
The BBC consistently offers absolutely TOP-SHELF drama--for decades now. Thankfully we can see the shows via PBS.
I sure hope BBC continues the series!!!