Detective in 40 minutes...good story

Genre: Crime, Thriller, Suspense
Starring:
Yoo Seung-ho As Han Jeong-hoon
Kang So-ra As Lee Da-jeong
Release year: 2009
Language: Korean
Subtitle: English


SYNOPSIS:
During fourth period, high schooler Da-jeong finds his 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.