Although this drama is about a school, it is not typical. I like this kind of psychological thriller. It is fun to try to figure out what is going on before the end. The story is really well done. I figured out what was going on by the 2nd episode, but it didn't stop me from enjoying it. I think the only reason why I figured it out is because I like dramas like this and watch a lot of them and I read a lot of crime books. I also watch a lot of CSI (US tv series) which has a lot of this type of story. Anyway, it is well written and the ending did take me a little by surprise. The ending was the best part of the whole drama. The acting has a lot of young eye candy stars, but they deliver. I am weary of the younger stars (the guys in this range from 22-27) that sometimes make their way into a drama because of their looks. A lot of these actors are models. However, each actor in this drama did an outstanding job portraying their characters. The music is really well done in this drama and flows nicely with the action. I probably won't rewatch this. Overall I really enjoyed it and I would recommend it to anyone that likes mystery, or psychological drama.