I loved this movie! Has a great sense of dread and makes you easily relate to the feelings the characters feel. That creepy feeling of something watching over your shoulder and weird sounds and happenings freaking you out is shown through the female leads. Definitely re-watchable as the it's something you go back to forgetting how the story really works out and how it ends. Female friendship and jealousy has barely been so well portrayed but this movie does it great. Song Ji Hyo's role is magnificent and she does a great job of portraying her character well!