It turns out that the killer is in fact Mi Rae’s boyfriend, Kim Joon Tae, and the team successfully arrests him. Sol asks Joon Tae the reason why he killed her, and he tells her that it was because he loved her. In addition, Joon Tae con-fesses about how he watched Soo Ho for several days in order to figure out his pattern and frame him. Meanwhile, Hyun tells Sol about his first case. (thetvdb.com)