In Georgia, Tennessee, and then Ohio and West Virginia, there appeared sightings of a loner on foot in a dark robe with odd headgear. In the connected age of smart phones and social media, a strange sight can become a global media fad. Someone tags a photo "#womaninblack" and others who see her follow suit. As the hashtags and Facebook sharing added up, public curiosity grew. Who was this mysterious woman in black and why was she shunning most contact with others?