Preston Dennett began investigating UFOs and the paranormal in 1986 when he discovered that his family, friends and co-workers were having dramatic unexplained encounters. Since then, he has interviewed hundreds of witnesses and investigated a wide variety of paranormal phenomena. He is a field investigator for the Mutual UFO Network (MUFON), a ghost hunter, a paranormal researcher, and the author of 24 books and more than 100 articles on UFOs and the paranormal.