Lee Sung-kyoung
Cho Ji-hye
Choi Soo-young
Yang Jang-mi
Yeom Hye-ran
Chief Civil Service Officer
Cho Byeong-kyu
Youngest Detective
Lee Jung-min
Chae Sook-hee
Sung Dong-il
Hwang Bok-hyun
Baek Seung-hwan
Police Chief
So Hee-jung
Se-jin's Mother
Kim Min-kyung
Youth Division Detective
Jack Lyons
JD the Tatooist
Anupam Tripathi
Arabian Subordinate
Choi Byung-yoon
Club Staff
Im Ye-eun
High School Student
Ahn Chang-hwan
Kang Sang-doo
Choi Hye-jin
Back Street Nostalgic Girl
Han Soo-hyun
Detective Kwak
Kim Han-sang
Past Citation Moderator
Lim Hyun-sung
Cyber Investigations Police
Seo Suk-kyu
Truck Driver in Accident
Ahn Jae-hong
Happy Balloons Boss
Seol Chang-hee
Seo-jin's Doctor
Kim Tae-jun
Criminal Affairs Division Civil Petitioner
Bae Yoo-ram
Helium Balloon High Schooler
Ok Ja-yeon
New Pacific Suicide Female Victim
Kim Min-kyung
Woman & Youth Division Detective
Jeong Doo-won
Flirty Man at Club
Kim Gwang-seop
Shinchon Sunglasses Man
Kim Chul-hwan
Helium Balloon High Schooler
Kim Ji-na
Former Female Taskforce
Song Ji-hyuk
Happy Balloon University Student
Lee Moon-bin
Guardhouse Conscripted Policeman
Gambhir Man Shrestha
Arab Owner of Big-sized Clothes Store
