I recently did a ghost tour in Chicago. Nothing too exciting happened until I went a reviewed my pictures. I disproved all my pictures except this one. It seems to me that there is a man look back at me in the window. I remember when I took this picture "I'm not here to disrespect you. I'm just here to prove you exist." due to the fact our tour guide warned the group of spirits following a person home. I also have the picture I took moments after I took the one picture and the face is not there. What do you guys think?