This drama is just not good nor is it for me. Pity. I wanted to like this one since this is Lee Joon Gi and Moon Chae Won together. But the plot's execution is just not good. There are some episodes which are more interesting for me than the others (I find the cases in those episodes more compelling to watch), but this drama just fails for me to connect them with the main characters emotionally. I do appreciate some episodes that show the background and the struggles of some NCI members. Actingwise, as good as Joon Gi and Chae Won are as actors in general, the actors that were really given the chance to shine here are neither them nor the rest of the NCI team, but the actors playing the villains and their victims. At least Joon Gi and Son Hyun Joo (the other super main character NCI member) have some moments where they show their acting moments, I just wish Chae Won is given a heavy scene herself too (I hope people who only seen her in this one call her a bad actress, she has dramas and movies before this one where her acting really shine). I like Lee Sun Bin, Go Yoon and Yoo Sun in their respective roles but I think this drama didn't make them shine in their own way either (I do think Lee Sun Bin has been given more than the other two actors). Giving this drama a 6.5