A very interesting plot, kind of a slow burn because you can not be sure about what will happen next. Maybe not the best drama ever but had great performances and interesting twists! I also enjoyed that finally Korean dramas are less "innocent". I mean that most of the times you can be sure about the couple that ends up together simply because they share a kiss - it's like a seal of true love. In this story not, the protagonist is far from being innocent and perfect, as she's already married to another guy. In this drama you can enjoy the story of a mentally mature independent woman who focuses on the goal of getting revenge from the people that destroyed her family (as well as the families of many others). Be prepared though, it's a long unhappy road and sometimes you might wish for a better outcome. I also enjoyed the ending, as I believe it was the best that could happen. It was a form of the ancient Greek hubris-nemesis-atis-tisis. Overall I recommend it!