4th Period Mystery (2009)
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.
Director: Lee Sang-yong
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Yoo Seung-ho as Han Jung-hoon |
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Kang So-ra as Lee Da-jeong |
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Jo Sang-geun as Kim Tae-gyoo |
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Jeon Jun-hong as Byeong-soo |
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Jeong Seok-yong as Kang Gook-man |
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Park Cheol-min as Crazy |
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Rie Young-zin as Yun Sang-mi |
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Kim Dong-beom as Do-il |
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Jo Yoon-hee as Hong Ju-hee |
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Lee Chan-ho as Tak Teuin |
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Min Kyung-jin as Headmaster |
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Im Soo-hyang as Fan |
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Kim Young-woong as History teacher |
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Jung Young-ki as Student in Grade 2 Class 5 |
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Oh Jin-ha as Student in Grade 2 Class 5 |
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Choi Hong-rak as Student in Grade 2 Class 5 |
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Kim Min-su as Virtual Criminal |
| Directing | Lee Sang-yong | Director |
| Sound | Lee Sang-wook | Production Sound Mixer |
| Visual Effects | Kim Byeong-gi | Special Effects Supervisor |
| Writing | Shin Jai-ho | Writer |
| Art | Jeon Jin-won | Production Design |
| Art | Kim Jin-chul | Production Design |
| Editing | Kyung Min-ho | Editor |
| Writing | Lee Sang-yong | Adaptation |
| Sound | Lee Seung-chul | Sound Supervisor |
| Costume & Make-Up | Han Hye-sook | Costume Design |
| Production | Ku Jeong-hoe | Executive Producer |
| Production | Seo Myeong-jin | Producer |
| Writing | Seo Myeong-jin | Adaptation |
| Camera | Mun Ho-jin | Director of Photography |
| Lighting | Lee Heung-seong | Lighting Director |
