I'll start off by saying i came here solely for Lee Si Young, but i actually stayed for the story. This was a very solid action series, that can be easily watched and liked also by people who aren't fan of the genre (you see, usually crime/action shows target a specific audience, i talk from experience since i am more of a melodrama guy, this isn't what i'd watch by choice). Let me talk more specifically: STORY The meaning of story was about money, its power, how it rules over people's lives, not only by the literal meaning (using money to survive/live better, more comfortably) but how money can define us, make us ashamed of ourselves or proud with no particular reason. The slow revolves around loan sharks and the people behind them who do the dirty work the the debtors can't pay up. In this story with loan sharks the main couple gets sucked in. The fiancee of the male lead suddenly disappears and he tries to find her. The description of the show tells you like 10% of the story. I originally didn't have much interest in watching this because i wondered how can they drag an idea like that for 16 episodes. Thanfully the show has SO much more to offer than just a girl who disappears. The story is complicated, everyone is connected somehow. What was really amazing was the development of the story. It gets developed as a mystery in the beginning, but the show doesn't make you question things for a long time. You get rewarded for your patience. You get 1 question answered and 2 pop up, so this keeps happening, combine the mystery element with the FREAKING AMAZING fighting/action scenes and you pretty much get an 10/10 first half. I read people saying the first episodes are boring, i beg to differ. The first episode is rather slow, yes, not boring though. It needs to demostrate quite a few characters and situations, this usually happens. It picks up big time by episode 2 and keeps it up until like episode 7. I don't have many bad things to say about the show, which makes me wonder why i don't want to rate it higher than 8.5. The show never gets dragged. Yes, they manage to keep up the suspense, not the mystery so much, but the show never gets slow, it always has a goal and it goes for it. Episodes 8-11 were good, but not as *wowing* as the first episodes. Episodes 12-16 are also good, but they got repetitive imo. Not boring, or slow, just repetitive. I mean, at some point i felt like this was never going to end. There is a milestone the leads need to reach, and as soon as they get there, another one appears. It felt like a constant struggle to watch them (especially the male lead). However, i don't blame the show for this, as i said, it doesn't get boring, there is always progress, no unecessary conversations here (this shocked me), i rewinded the show quite a few times to re-read some conversations to understand what happens next. I need to congratulate the writters for a very well crafted story. The only tiny thing i may say is that the show sometimes gave convinient help to the leads to 'win', i mean for example, the male lead could have died 4237497247 times but they were always underestimating him. However, those convinient moments didn't feel forced, or stupid or ridiculous or unrealistic, so i went with them. Overall, the story was very well crafted, and the development was magnificent, seriously, i loved it, and it had quite a few plot twists along the way. The fact that i got tired of it and i felt it got repetitive, i blame it on the fact that this is not what i usually watch. A fan of this genre wouldn't have any problem keep going at all. ACTING I've read so many bad comments about the acting (especially on the 2 female leads) that i was actually expecting some seriously bad acting here, but not at all! Lee Si Young. I came for her, and she was as flawless as expected. Guys, it isn't her fault her character was naive. Yes, her character was naive and too good of a person for her own good (although, i understand why she was acting like that, considering the circumstanses she was under). LSH gave a wonderful performance again, in a not-so-well-developed character. All i'd wish is for her character to have been more linked to the plot. Her character had almost no impact, and it didn't really feel like a 'lead' character at all. The other female lead (who is listed as 'supporting') had more screen time, and was more important to the story. Kim Mu Yeol. I didn't know him before this, but he really earned my respect. Amazing actor, his action/fighting scenes were FLAWLESS!!! Better than expected, the guy really was perfect. His emotional and dramatic scenes were also believeable, he was overall great. His character was borderline crazy, but lets say we understand why he was doing what he was doing.... Go Sung Hee. The amount of hate for this actress is beyond me. It just proves that hate is popular. 'Hey a bunch of people said this actress sucks, lets all hate her so we can be accepted by the dramalist society'. GSH won't win any awards for her performance here, but none of the actors will. Maybe i have too low expectations when it comes to acting but, as far as i'm concerned, she gave a solid performance, she was believeable, i've definately seen worse, i don't understand what people didn't like, she was great, i actually liked her a lot, and rooted for her character a lot. She certainly didn't bring the show down at all. RECOMMEND/REWATCH If you are a fan of this action/crime/suspense/thriller genre, you will love this. You should definately watch it. If you are more of a rom-com or melo fan like me, thinking about watching it, i'd still recommend it, but don't expect any romance here. There is romance, but plays only a small part in order for the story to progress... Get ready to watch a lot of violence, a lot of bad guys, money talk, nothing cute whatsoever and whatever good and bad comes with this. Would i rewatch this? Well, the fighting scenes, definately, but overall, it is a tiresome show. Since i am not a fan of this genre i can't say i'd watch it again, but i can see why some people would rewatch it.