My great-uncle once told me a story about his time working as a truck driver in the 70's delivering in London. He told me one day he was standing by his truck having a cigarette, when he noticed approaching him two figures. Naturally he assumed them to be locals of the area. It was only when they got closer that he realised something seemed odd about the duo. He said they were both dressed in outfits and he couldn't see their faces, and said he felt an unnerving feeling come over him as they passed by. My great-uncle was an honest, run of the mill man.