When a show can make me empathise with a bad guy and take his side, it is a 6 star show. This kind of genre is generally not my type, but yet I was captivated by it and kept wanting to know what happens next. There is always an element of suspense in the story, always some kind of threat would arrive. And then you wonder how the character will react and prepare for it. And often, it surprises you.
Excellent casting and storyline, and of course great acting.