APT

APT is a 2006 South Korean horror film, directed, produced, and written by Ahn Byeong-ki and starring Ko So-young. It is based on a webtoon by Kang Full. The name APT is from the English word meaning apartment. The film had 644,893 admissions nationwide.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.

Poster © the film's rights holders.