Chun Woohee's performance is really captivating especially in this type of psychological thriller genre. She's able to pull in every little attention to details and carry the whole heavy ambience of the movie, just like her previous work in "Vertigo", but this time even a more formidable upgrade with a blend of spicy mystery and horror in it. The cinematic effect of it is extremely eerie and scary, which works quite effectively in some of the best mental scenes ever in a korean movie, because who knows exactly what we are underneath this pretentious skin surrounded by modern pressure.