Through the Darkness

Kim Nam-gil

Song Ha-young

Kim So-jin

Yoon Tae-goo

Jin Sun-kyu

Kook Young-soo

Ryeoun

Jung Woo-joo

Lee Dae-yeon

Baek Jun-shik

Jung Soon-won

Nam Il-young

Kim Won-hae

Heo Gil-pyo

Hong Woo-jin

Oh In-tak

Jo Young-jin

Lee Jin-chul

Lee Haney

Im Moo-sik

Kim Hye-ok

Park Young-shin

Seo Dong-gab

Kim Bong-shik

Kong Seong-ha

Choi Yoon-ji

Han Jun-woo

Gu Young-chun

Sun Yul-woo

Detective

Kim Joong-hee

Nam Ki-tae

Jeong Man-sik

Park Dae-woong

Moon Dong-hyeok

Moon Tae-soo

Kim Hyun

Hwa-yeon's mother

Woo Jung-kook

Cho Hyun-gil

Na Chul

Woo Ho-sung

Oh Seung-hoon

Jo Kang-moo

Yoon Hye-ree

Choi Hwa-yeon

Oh Kyung-joo

Bang Ki-hoon

Oh Hee-jun

Kang Yoo-min

Ko Gun-han

Yang Yong-chul

Lee Cheon-mu

Song Ha-young (young)

Noh Ha-yeon

Lee Soo-hyun

Ki Hwan

Soo-hyun's father

Lee Hun-joo

Soo-hyun's mother

Son Young-soon

Lee Chun-young

Kim Gyeong-min

Professor An

Seong No-jin

Forensics examiner

Choi Sol-hee

Yang Ji-sook

Kim Yun-seul

Cotton candy girl

Kim Kwan-mo

Undercover cop in drag

Choi Da-young

Nurse

Hwang Jeong-min

'Turtle' supermarket owner

Heo Seon-haeng

Medical examiner

Kim Deok-ju

Hwa-yeon's landlord

Lee Si-young

Neighborhood single mother

Bang Jung-hyun

Detective

Park Jin-young

Doctor

Cheon Dong-been

Deliveryman

Lee Ki-seop

Kang Jin-goo

Lee Jong-yoon

Jang Deuk-hok

Bae Sung-il

Detective

Jung Chung-gu

Film developer

Park Yu-mil

Lim Hyun-joo

Lee Jae-eun

Mrs. Kim

Jung Young-keum

Hyun-gil's landlord

Choi Nam-wook

Convenience store owner

Ku Sung-hwan

Hwang Dae-sun

Seo Myung-chan

Han Seok-hoon

Hwang In-jun

Detective

Oh Kyu-taek

Man drinking with prosecutor

Hong Ye-ji

Bookstore employee

Lee Geun-hoo

Kwak Man-hyun

Lee Jae-woo

Detective Kim

Kim Bum-joon

Witness

Yoo Yong

Detective

Lee Dong-kyu

Anchorman

Kim Joo-ah

Columbarium employee

Choi Min-hyeok

Victim

Han Dae-gwan

Victim's father

Kim Nak-kyun

Detective

Hong Eun-jeong

Manyeon bus stop woman

Lee Ye-joo

Christmas tree girl

Yoon Ga-i

Lee Cho-won

Noh Eun-ha

ATM woman

Kim Borana

Massage parlor owner

Kim Bong-soo

Ji-sook's father

Kim Bong-hee

Ji-sook's mother