Concept Idea for an Opening Sequence 3

My third idea is a thriller opening sequence where there is a man who stalks someone, captures them and locks them into a basement. He suffers from many mental illnesses mainly personality disorders. The audience are watching from the point of view of the man. This man finally gets the victim, but the audience never see the persons face. The last shot would be the murderer revealing the mask of the victim that he is about to kill but it is himself showing that he is about to kill himself because of his mental illnesses and then a gun shot. 

A potential filming location could be Leith Hill Woods when it is dark which is 20 minutes away in a car.  The cast would only consist of two people to play this man who would have similar body types and height to convey that this is the same person. They would wear the same costume but the victim would have his face covered the whole time. 

Leith Hill Woods