There have been quite a few times when I have been talking with a group of people and somehow the conversation will turn towards "ghost stories." Every time, there was always someone who had an experience for which they could not find a mundane explanation. I myself have had a few unusual experiences. Inevitably, there are skeptics in the group who, even given the absence of any other reasonable causes, will claim that the person telling the story must have been mistaken. However, the sk...