Jung Da-won Director, Screenwriter Ra Mi-ran Mi-Young Actor Lee Sung-kyung Ji-hye Actor Yoon Sang-hyun Jo Ji-chul Actor Soo-young Yang Jang-mi Actor Wi Ha-joon Woo-joon Actor Joo Woo-jae Phillip Actor Eom Hye-ran Department head Actor Jo Byung-gyu Youngest detective Actor Jeon Seok-ho Detective Oh Actor Jack Lyons JD the Tatooist Actor Kang Hong-seok Yong-suk Actor Kim Do-wan Chan-young Actor Ha Jung-woo Motel desk clerk Actor Ahn Jae-hong Bouncer Actor Sung Dong-il Chief of felony crime squad Actor So Hee-jung Seo-jin's mother Actor Min So-yeon Screenwriter Ahn Seong-hyun Screenwriter Byun Bong-hyun Producer Lee Seong-jae Cinematographer Lee Dong-hwa Lighting Kim Hyeong-ju Film Editor