Where do UFOs entities and spirit visions cross over. In many cases they act one and the same. Let me explain. Even in the Bible there are cases of spirits walking. When the Apostles were gathered in the room with locked doors Yeshua appeared after his death. So did many of the aliens in John Keel's book Mysterious Beings. Even more are linked together by Hilary Evans' book, Visions, Apparitions and Alien Visitors.