This drama is amazing talks about love that stands for 10 years about a boy who loves a girl from his heart and ready to do any thing for her and she feels the same way and they solve cases that they have 1% chance of winning it so it makes you so exited it is a drama that makes you addicted to it and the OST just amazing and the cast is great every character is good for it personality and it talks about life and revenge and i gotta admit the director is really smart i really like his way of directing this drama so overall it is awesome.