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