This series benefit from outstanding screen writings; it's really next level. Great complimentary performance by the key actors. Suspense and drama to the maximum effect. Moreover, the show benefits from brilliant casts; while they key actors are very famous, you forget that they you know them from their pervious roles and actually become the characters they are playing. Both of their performances are as good as anything you'll see from a television show. Last but not least, the original music is excellent and fits the mood perfectly; being mysterious and dark. Good overall storyline is running through the 3 seasons.