Episode 6

Sun-Dal's wallet gets stolen. When they track the thief down, they are surprised to find that she is a patient at a local hospital with little time left to live / Min-Hyuk's patience is running thin. He wants to find the man that killed his father and Bum-Gyu isn't helping. To make Min-Hyuk stay, Sun-Dal and Won-Sam make believe that they've found "X", with the help of a stranger whose been living in the basement.