In a prep-class for year-end exams, a sadistic killer puts the students through mind-games in order to save each other.
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Lee Beom-soo
Hwang Chang-wook
Yoon Jung-hee
Choi So-yeong
Nam Gyu-ri
Kang Yi-na
Kim Bum
Kang Hyeon
Son Yeo-eun
Yoon Myung-hyo
Lee Eol
Security guard
Kim So-hee
Ji-won's mother
Kong Jeong-hwan
Lee Chi-yeong
Ham Eun-jung
Kim Ji-won
Yang Ji-won
Min Hye-yeong
Director
Chang
Screenplay
Kim Eun-Kyeong
Tagline
"One will die for every incorrect answer."
Status
Released
Original Language
KO
Production
Mirovision, SK Telecom
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