So.. I was wavering whether I should write a review or not as I'm really bad at expressing my opinion.. also it seems that most of the reviewers had positive opinions about this drama... but.. I'll try.. To begin with, this drama had a lot of potential when it started airing. At first I didn't think that the cast for this drama was chosen wisely, but I was soooo wrong. All the actors were just amazing, and they suited their characters very well. The story was so captivating that it'd could have been used for a block buster movie! Cameramen did a great job too and the music added the thrill to each scene BUT it all changed. From a possibly block buster it went down to the amateur level after ~10/12 episodes (I'm talking about the writer's choices and the plot only). It became boring, lame and ridiculous. I hope this is not a spoiler but... come on!... A psycho serial killer going out from and back in to the jail like it was a hotel or something... A detective with a mentality of a 5th grader, getting himself into troubles wherever he goes... and many more.... I have to admit that after 15th episode I watched this drama just to finish it, just to see the ending. I'm not even counting how many dialogues or crying scenes I've skipped... And the ending... it was a huge disappointment... They could have made and awesome drama with 16th episodes, but they were greedy and stretched it out to 20th. That was a mistake in my opinion. A mistake which ruined everything.. Anyway, if you want to see how bad can writers fail when they're greedy for the spotlight.. you can watch this drama.. otherwise... it's a waste of time :/