Our Older Sister (literal title)(울언니)is a December 4, 2014 Movie directed by Lee Je-Rak South Korea.
Yeon-Seo ( Yang Ha-Eun ) majors in music at an university. She travels to Seoul to meet her older sister Jin-Seo. When she arrives at her sister's house, Yeon-Seo a large crowd and police there. Yeon-Seo learns that her sister was found dead. The police concluded that her death was a suicide. Yeon-Seo doubts her sister took her own life and begins to investigate. Detective Kim ( Oh Gwang-Rok ), impressed by Yeon-Seo's efforts, reexamines the case.