ปริศนาลับโรงเรียนมรณะ

이범수

Hwang Chang-wook

윤정희

Choi So-yeong

남규리

Kang Yi-na

김범

Kang Hyeon

손여은

Yoon Myung-hyo

이얼

Security guard

Kim So-hee

Ji-won's mother

공정환

Lee Chi-yeong

함은정

Kim Ji-won

Yang Ji-won

Min Hye-yeong

Lee Chae-won

Yeom Ji-hyang

권현상

Cha Jae-wook

손호준

Jo Beom

최인숙

Myung-hyo's mother

Choi Bae-young

Park Hyun-gyeong

문웅기

Kim Hyung-jin