Personally I think you could have made some really nice photos of the wall, without the person in the photos. The person doesn't look like they belong. I would have tried to just work with the persons shadow.
An excellent place to tell a story..... but story is a bit weak ... actually i found 1 & 2 likable...but the addition of third and fourth made the whole series snapshottish!!!
Hey please reveal how that shadow could deceive the body?