Is there really an "abominable snowman"? Do beings from outer space visit the Earth in "flying suacers" or "UFOs"? Can some people predict catastrophes or see into the future - perhaps with the help of astrology? Do the ghosts of murder victims really haunt or castles? Do gigantic creatures like giant squid inhabit the depths of the oceans? The author of this bokk examines these and other similar questions and shows that such mysterious phenomena usually can't stand up to scientific investigation. Our willingness to believe in supernatural or miraculous things keeps legends and superstitions alive even in our technologically and scientifically advanced age.