6.4
Son Hyun-joo
Choi Chang-sik

Don Lee
Detective Oh

Park Seo-jun
Cha Dong-jae

Choi Daniel
Kim Jin-gyu

Jung Won-joong
Police Chief

Lee San-ho
Jung Ji-soo

Lee Sang-won
Detective Lee

Jeong Joon-won
Myung-ho

Lee Jun-hyeok
Lee Myung-chun

Woo Jung-kook
Kim Jin-gyu's Father

Bae Jin-woong
Past Gambler

Min Chae-yeon
Policewoman
Wu Sang-moo
Lee Jung-hoon

Han Soo-hyun
Detective Cho

Park Sung-hyun
Detective Park

Uhm Ji-sung
Young Dong-jae

Ji Dae-han
APT

Yoon Dae-yeul
Drug
Kwon Yoo-jun
Forensic scientist

Lee Tae-hyung
Jung Ji-soo