Very good drama. The plot was well written. When you start watching it might seem slow at first but the plot picks up at about episode 4 and from then on you never know who to trust. Those who you suspect are not it and if they are it's for other reasons. The real master mind gets revealed right at the end of the story and you don't meet them until the last episodes. It was really shocking. I got to say this drama kept me at my toes and it wasn't predictable like other crime mystery dramas. Also although it's not heavily focused on romance you can still see how the main leads start to care about each other. I recommend this drama. It's a happy ending and none of our loved characters die.