Investigator John Kachuba has traveled around the country interviewing paranormal experts and people who have come face to face with the other side. He has found that the more he investigates, the more he believes in the reality of ghosts himself, though he is not yet fully convinced about what ghosts actually are. He says, ?Ghosts may simply be the palpable manifestation of some scientific principles we do not yet understand.? Here, Kachuba talks about his book Ghosthunters, the evidence for the reality of ghosts and the increasing interest in ghost tours, ghosts in movies and TV, and ghosts on the Internet.