Kim Young-ah

Hong Jeong-ah

Yang Kyung-won

Park Doo-sik

Seo Jae-hee

Park Mi-gyeong

Seol Lee

Seo Soo-jin

Hyeon-geol Lee

Kim Jin-man (Northern Prison staff)

Si-ye Shin

Kim Ji-soo

Kim Soo-hyun

Kim Hyeon-soo

Seung-Won Cha

Sin Joong-han

Kim Sungkyu

Do Ji Tae

Hwang Se-won

Hong Gook-hwa

Jae-in Lee

Crime scene investigator

Lee Poong-woon

Eom Gi-jong

Woon Jung-won

Investigator