This was a well-written, and wonderfully acted story. Yoon Hyun Min's character (2nd male lead) progressed in an alarming way, showing what avarice and want of power can do. Kim So Yeon was terrific as the ever-efficient and loyal secretary. She was so mature that she seemed much older than everyone else. She has a honey-sweet voice that would calm the most agitated person. That said, Jung Kyung Ho ran away with this show. His character had been driven by revenge for years, and that was his entire focus. He was all hard edges and unforgiveness. Once he has a "change of heart" (which I think should have been the movie's title, by the way!), watching him come to terms with making some decisions that might actually benefit someone else was a joy to watch. This was a man not used to feeling anything other than anger, now suddenly he was starting to feel love. At times he did not take it well, which brought on some extremely funny scenes. Him getting dating advice from his trusty male secretary was a hoot. He didn't actually know how to have interpersonal relationships, so he kept yelling at people, and he said some really funny things to others. The two leads had a wonderful chemistry together. They were playful at times (I dare you not to crack a smile while watching this!), soulful at other times. Good kisses. It was a happy ending, though it was a letdown, kind of emotionless after everything the couple went through to be together. They should change the poster for this show. I didn't watch it for the longest time, thinking it was going to be too slapstick, but this was an intelligent show, with elements of drama, comedy, crime, mystery, all rolled up in one package.