High School Mystery Club

Suicide at the School (1x7)

:

Upon arriving at school, the Mystery Club girls get shocked when they see the police investigating the dead body of a girl who committed suicide. They soon realize it was In Hye, the girl who was involved in the cheating incident. After the police ask them questions, they head to the Mystery Club hideout where they discover In Hye's red scarf perched on the ledge hinting that it could've been a murder.