A father takes a photo of his daughter one afternoon while the two were together outside and no one else around. When the picture is developed, you can clearly see a man in a space suit standing a few feet behind the little girl. Where did he come from?
What about the mysterious old lady seen calmly taking photographs of the chaos that proceeded the gunshots that fateful day in Dallas, Texas on November 22, 1963, when John F. Kennedy was assassinated? There are pictures to prove her presence but no records of her existence.