A Hard Day

Lee Sun-kyun

Go Gun-su

Cho Jin-woong

Park Chang-min

Jeong Man-sik

Detective Choi

Shin Jung-keun

Chief of Homicide

Shin Dong-mi

Younger Sister

Heo Jung-eun

Min-a

Kim Dong-young

Detective Doh

Ju Seok-tae

Detective

Park Bo-gum

Officer Lee Jin-ho

Lee Ji-hoon

Police Officer of Chemistry Storage

Kim Bo-kyung

Ex-wife

Kim Kang-hyun

Young-cheol

Kim Hae-gon

Vault Owner

Ki Joo-bong

Mr. Kim

Bae Yu-ram

Police Officer

Jang In-sub

Police Officer

Seo Hyun-woo

Police Officer

Jang Jun-nyeong

Mr. Choi

You Jeong-hun

Executive Producer

Cha Ji-hyun

Producer

Lee Dong-yoon

Producer

Kim Tae-sung

Director of Photography

Kim Seong-hun

Director, Writer

Chang Hang-jun

Writer

Billy Acumen

Executive Producer

Kim Chang-ju

Editor

Mok Yeong-jin

Original Music Composer