The Uninvited Wedding Guest

This was taken in October 1972 by a professional photographer who was commissioned to take photographs of guests arriving at the wedding reception. The photo shows 3 guests. Crouching behind one of them is a spirit extra looking towards the camera and dressed in what appears to be open-toed sandals.

The photographer said the negative also showed the spirit extra. He could not explain the photo. As far as he was aware no one was behind the man when the photo was taken and no one was there when we moved away. He said it would be impossible for anyone to crouch behind without the person being aware of their presence. (Source)