Thriller idea presentaions

My original idea was quite far away in face value from our final production but still remained to have a core part in our final idea. my idea was about the fear of something following you that was ambiguouse as in you didnt know wat it is. My idea was to use certain camera angles and lights to create the idea of a light following someone and the idea that you never see wat it is that is following them. It was in my mind targeted at young thrill seekers who enjoyed a good scare i had it imaganed as being an 18 and ranging to about a target age of about 35 maybe 40. I would also want it to be made by a top end film company paramount or universal studios.