For starters I watched this drama because of who else but Lee Min Ho. It was still one of the first dramas I watched and I wanted to see Lee Min Ho in everything I could. Before watching this one I had seen Min Ho in BOF, Faith and Heirs so I had already had a taste of him in an action role and of course in a love role, what was most impressive and intriguing about this drama was that my love for it is not based on Min Ho's acting. While I think he did a great job I was really impressed by the story line, plot and suspense in this drama. I liked all the action scenes and I think the entire production team and Min Ho did a great job at pulling it off. The first couple of episodes were a little weird in setting up the back story, but once Lee Yoon Sung (Min Ho's character) starts to really get into the whole revenge plot it becomes really interesting and exciting. Of course Lee Joon-Hyuk also deserves major credit in his role- that is all I can say without putting in spoilers :) Overall this drama makes your heart race, your blood pump through your veins. You want to slap some characters and save others and it kept me enthralled till the end.