My view: I have seen him wear a hood before in photos for no particular reason and indoors as well. It may have been cold or he just forgot to take it off. Unless one was there, I think it would be hard to know for sure whether or not he was trying to snoop in undetected. We must give him the benefit of doubt there I think. For all we know, he could have gone there to 'figure' this other person out, a bit like what some of us like doing on this forum.