When he found out that his reality was a lie. It was wierd and confusing when his partner turned out to be his psychologist and he himself was actually another person.
I really didn't think there were any weird moments in this movie. It was put together well. It is like the movie Fight Club, you think you know what it is about and then you get to the end and find out wow that wasn't what I was expecting. I like movies like that. I also don't think of this as a horror movie. I think it is more of a drama. It would be a really good movie for a Psychology class.