please don't waste your time by buying these types of dramas...there are really many good dramas out there....please don't fall for the ratings... about this drama: 1.it is not up to the point. 2.slow (very slow) and boring screenplay. . it is a thriller detective (investigation) series..but the main story doesn't even concentrate at that type of plot..first two to three episodes may make you wander ..but after that it's just a normal, slow, boring love story between a detective and a graduate girl.....and even love sequences aren't interesting....total boring.....even if you have so much time to waste,please don't watch it...