I also thought it was kind of boring. If you look beyond that though, the feeling of being followed around by an eerie entity is really terrifying. Just imagine someone walking towards you, naked, and with an expressionless look on their face. Just thinking of the fact that someone or anyone could be following you from out of nowhere is absolutely spine-chilling. That alone, in my opinion, is very horrifying. I also loved the beginning. It was very morbid to me.