This drama is just, simply put, awesome. If my review could just be one sentence in fact, the above would be it. I was hooked from the very first episode, and never once did my attention wane. It is one of those dramas that stays with you, and even when I was out living my day, I was counting the minutes until I could continue watching. Lee Jun Ki is just breathtaking in this. Not only in the looks department but his acting skills really shine. He is such a talented actor who can successfully portray a vast amount of emotions throughout and pulls it off effortlessly. Plus, we get to see his fighting skills too, in this and every action scene was intense and kept me on the edge of my seat. I think the best thing about this drama, besides Lee Jun Ki as the lead, is the theme. It's not just your typical revenge drama. Not only does it take one of the biggest cliches in Asian drama and make it totally awesome that it's a serious part of the plot, it actually delves deep and confronts the moral aspects and dilemmas of seeking revenge. The very, very best thing, though? (Again apart from Lee Jun Ki as the lead) It keeps you guessing. You may think you've figured something out, or expected a certain outcome, and instead, you get handed a surprise that you totally didn't expect. I very highly recommend this drama to people. In fact, if you haven't seen it, stop what you're doing right now and start watching this drama! You will not regret it.