This was an excellent series. The focus was not so much on the details of the affair, but rather on the damage that an affair causes, to more than just the couple. There was so much raw emotion and angst portrayed. Lee Sun Kyun played his part flawlessly. I almost didn't watch this due to some negative reviews. I have, sadly, come to realize that there are those who rate a series on their personal feelings about the subject matter, rather than the value of the actual production. This drama was done beautifully and I know that it will stick with me for some time to come.