SOOOOOO GOOOOD :) I spent the first half of the series suspecting everyone....lol even when they made it pretty clear. This is an interesting series that shows its hand way before the last act, and you get into the interesting part of what do you do when you know who the killer is. The drama didn't hold back on the suspense, thrilling scenes, and the looks that definitely gave me the heebie jeebies. However as afraid of horror movies, and the drawn out thriller grabs I loved every minute of this drama. I love that while it did have romance, that wasn't what drove the vehicle of this drama. It was all about the action, and finding the clues to put everything together. What good was it if you know who it is, if you don't know how it ended up this way. The characters all play their parts well, especially the villains of each case that come the teams way. The acting was spectacular, and more than once will you be horrified, shocked, and just a little bit teary. The main characters are a decent match, and while I think Seo in Guk's character was a little too stiff, there are a lot of things to justify that. Jang Nara is a strong female lead, and a complete 360 from her baby faced beauty character, which made me sight in loud and obvious relief. The story progresses steadily, and there are almost no loose ends, however I have to say the questions you are left with are ones that obviously the director and producers never plan on answering. If you want the genius, teamwork, crime, suspense, and thrill this is the series to watch. I would say romance, but since it's more back burner I lean to the main themes. This is a must watch....during the day :)