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.
Jung Jae-young
Baek Beom
Jeong Yu-mi
Eun Sol
No Min-woo
Jang Cheol
Kang Seung-hyun
Sally Kim
Ahn Suk-hwan
No Han-Shin
Park Jun-gyu
Kang Dong-Sik
Park Hee-jin
Cheon Mi-Ho
Ko Kyu-phil
Jang Seong-Joo
Kim Young-woong
Yang Soo-Dong
Ju Jin-mo
Park Joong-Ho
Song Young-gyu
Ma Do-Nam
Noh Susanna
Han Soo-Yeon
Oh Man-seok
Do Ji-Han