Kim Jung-tae
Detective Song
Lee Han-wi
Lee Yong-kab
Lee Sun-kyun
Jeong Eui-chan
Park Joong-hoon
Hwang Jae-sung
Lee Sung-min
Detective Jo
Jang So-yeon
Bae Yong-geun
Investigator
Han Soo-yeon
Hyun-sook
Im Won-hee
Ph.D Ko
Ko Joo-yeon
Soo-yeon
Ahn Yong-jun
Detective Kim
Jeong Do-won
Detective Shin
Kang Ki-hwa
Hye-jin
Kim So-jin
Mapo Detective
Sung Yeol-seok
Metropolitan Detective
Lee Seung-cheol
Hyun-sook's father
Yoon Sung-won
Kim Woon
Conscripted Policeman