It was disappointing, I felt it could have been wrapped up in 4 episodes not 6. What was that Swedish couple and the research centre in it for? red herrings that's wot. As for the most unlikely spy in tv history, well he was a damp squib aswell. DI Calder doesn't cut it for me either, it seems you get to Inspector and turn grumpy, I don't think she smiled much at all, Perez was the same, must be the cold up there. No, I think I'm giving Shetland a miss from now on 