What started off with promise and good atmosphere. What proceeded to build tension and the notion your guesses of what everyone is seeing will finally pay off with some form of answer, ends up being 2 hours of wasted time. A large factor used in horrors is not knowing, or keeping something hidden from the viewer (keeping them guessing) but not necessarily from the characters in the movie or show. However with no reveal or any form of answer, it becomes a cheap scapegoat for writers to not have to create a clever answer that is waiting at the end of the 2 hours. So instead of seeing if your guesses were correct or having the 2 hours sat there pay off, you're left feeling like you've just wasted your time. Even legendary horrors like Hitchcock's Psycho didn't have to show violence and left it to the imagination (possibly also due to higher censorship decades ago) but you still knew the facts or were given substance to work with. So when you're watching a horror where it's possible there is no real antagonist then it's pointless.

Save your your for something better spent than this disappointment.