Ra Mi-ran
Park Mi-young
Ra Mi-ran
Park Mi-young
Lee Sung-kyoung
Cho Ji-hye
Yoon Sang-hyun
Jo Ji-chul
Choi Soo-young
Yang Jang-mi
Yeom Hye-ran
Chief Civil Service Officer
Wi Ha-jun
Woo-jun
Joo Woo-jae
Philip
Kang Hong-suk
Yong-seok
Kim Do-wan
Chan-young
Jun Suk-ho
Detective Oh
Cho Byeong-kyu
Youngest Detective
Lee Jung-min
Chae Sook-hee
Ha Jung-woo
Motel Staff
Sung Dong-il
Hwang Bok-hyun
Lee Re
Young Ji-hye
Ahn Seong-bong
Big Man
Baek Seung-hwan
Police Chief
So Hee-jung
Se-jin's Mother
Kim Min-kyung
Youth Division Detective
Jo Hye-joo
Soo-bin
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
Park Se-jin
Girl Cop
Lim Hyun-sung
Cyber Investigations Police
Park So-eun
Seo-jin
Chris Lyon
Carmelo
Seo Suk-kyu
Truck Driver in Accident
Ahn Jae-hong
Happy Balloons Boss
Kim Jun
Chan-woong
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
Jeon Gun-ik
Special Effects Supervisor
Hwang Jung-ho
Production Sound Mixer
No Ju-han
Still Photographer
Yoon Seong-min
Stunts
Lee Bong-woo
Set Decoration
Kwon Tae-ho
Stunts
Yoo Mi-jin
Stunts
Kang Moo-seong
Set Decoration
Eom Se-yong
Props
Cho Gi-hun
Key Grip
Kwon Ji-yoon
Assistant Director
Jeong Hye-ri
Digital Intermediate
Kim Dong-hyo
Lighting Artist
Jeon Young-wook
Still Photographer
Kang Gyeong-su
Stunts
Kim Jong-sung
Visual Effects
Dawon Jung
Writer
Ahn Seong-hyun
Producer
Dawon Jung
Director
Byun Bong-hyun
Executive Producer
Lee Sung-jae
Director of Photography
Kim Hyung-ju
Editor
Lee Jae-hak
Original Music Composer
Son Min-jeong
Production Design
Lee Seung-yeop
Sound Supervisor
Heo Min-heoi
Executive Producer
Ahn Seong-hyun
Adaptation
Na Jun-o
Original Story
Lee Jae-yun
Original Story
Min So-yeon
Adaptation
Park Min-hui
Makeup & Hair
Shin Ji-young
Costume Design
Kim Young-rok
Sound Supervisor
Lee Dong-hwa
Lighting Director
Lim Myeong-gyun
Executive Producer
Lee Seon-yeong
Executive Producer's Assistant
Kim Su-jin
Production Assistant
Lim Byeong-woo
Sound Director
Tae Wook
Props
Heo Myeong-haeng
Fight Choreographer