A Hard Day

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Lee Sun-kyun

Det. Ko Geun-soo

Cho Jin-woong

Park Chang-min

Man-sik Jeong

Det. Choi

Shin Jeong-geun

Det. Squad Chief

Kim Dong-young

Detective Do

Joo Suk-tae

Detective Nam

Heo Jung-eun

Min-a

Park Bo-gum

Police Officer Lee

Kim Bo-kyung

Ex-wife

Shin Dong-mi

Ko Gun-soo's younger sister

Eun-seok Choi

Bomb expert demonstrator

Kim Geu-rim

Traffic Department Policewoman

Geun-hoo Lee

Jeong Bi-sa

Kim Gun-ho

Funeral Service Company Employee

Kwang-du Baek

Interrogation Room Secretary

Hasuk Jo

Lee Kwang-min

Hae-gon Kim

Vault Owner

Lee Hee-seok

Cabinet inspection team member

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