4th Period Mystery

Crime, Mystery, Thriller, Action

🎬 Critics Choice Nominee

Director Sang-yong Lee

Status Released

Release Date 2009-08-12

Storyline

During fourth period, high schooler Da-jeong finds her classmate Tae-gyu dead in a classroom and Jeong-hun standing in front of him with blood on his clothes. In order to stop Jeong-hun from becoming the prime suspect, Da-jeong must help him find the real murderer, who is still inside the school building, under 40 minutes before period four ends.