A very interesting story and concept with good and very good interpretations but the direction is poor. Three whole seasons and just only a few seconds for the scene of revenge??And the most important drawback for me is that each season doesn't have its own end,it isn't an accomplished "circle"so the action loses its interest. Anyway if you have already seen all the notorious tv series or Marco Polo(which is also a Masterpiece)it is worth watching it!