1x15 - Brain Works

Ha Ru found out that his parents were not victims of a car accident but of a murder. To get to the bottom of the truth behind the murder, Ha Ru decides to do as requested by Hwang Dong Woo. Ha Ru is well aware of what Dr. Hwang wants to accomplish through him, but he takes the risk anyway. One wrong step can turn Ha Ru into a murderer, and he knows it more than anyone else.