Black House

Hwang Jung-min

Jun-oh

Kang Shin-il

Chung-bae

Yu Seon

Yi-hwa

Yoo Seung-mok

Ma Yong-sik

Kim Seo-hyung

Jang Mi-na

Kim Jung-pal

Section Chief Nam

Jung In-gi

Detective Oh

Lee Hae-young

Han Seung-gyu

Lee Kyung-hoon

Detective Kim

Lee Joo-sil

Vice Principal

Son Ho-seung

Scarred Man

Kim Do-yoon

Nylon Patient

Hwang Choon-ha

Nylon Patient

Son Byung-wook

Nylon Patient

Mun Ka-young

Chul-yun