Who's That Knocking at My Door?

Title : Who's That Knocking at My Door?

Also known as: Ju-su-ji-e-seon geon-jim chi-ta

Release Date: 2007

Genre: Thriller, Horror

Starring:
* Ji-kyu Lim - Je-hwi Min
* Sang-woo Pyo (표상우) - Pyo
* So-si Yun - Jang-hee Nam
* Ji-yeon Lim (1984) - Ro-mi
* Sung-ha Cho - Byeong-cheol Choi
* Jae-yong Lee

Synopsis :

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.