Scariest part
There is a scene in the movie which I think is the scariest. When she was in the taxi and noticed there's a lady with a long pony tail, sitting with her back turned against her on the other side. I was so freaked out when the lady turns around and reveals that she has a pony tail in the place where her face should be...
That scene still echoed on my mind for a couple of days after watching the movie.