Who's That Knocking At My Door? (2007)

There are five lonely souls: Je-hwi, who hides himself from the world. Jang-hui, who is obsessed with certificates of qualification; Byeong-cheol, who believes that he has a fatal disease; and the lovers, Pyo and Romi. One day, a woman who committed suicide suddenly appears before them.

Genres: Drama, Thriller

Stars: Im Ji-gyu, Lee Jae-yong, Yoon Chae-yeong, Im Ji-yeon, Cho Seong-ha