People disappear without a trace. Captain Briggs, his crew, and his family vanished from the Canadian built Mary Celeste. Ben Bathurst walked around the horses harnessed to his coach - and was never seen again. People appear without explanation Kaspar Hauser arrived in Nuremberg as inexplicably as if he'd materialised from some unknown dimension. Researchers of the paranormal have investigated cases where thought-forms seem to have acquired quasi-physical properties. Madame Blavatsky claimed to have done it. There were times when Nikola Tesla, the brilliant electrical experimenter, seems to have lived in an alternative reality where mental images of his machines became solid to him. Tesla expert, Oliver Nichelson, put forward a theory connecting Tesla's awesomely strange apparatus at Wardenclyffe, Long Island, with the Tunguska explosion of 1908. Were similar strange forces responsible for moving the Barbados coffins around in their sealed vault? Where do poltergeists, like the one that haunted Esther Cox in Amherst, Nova Scotia, get their inexplicable energy? When scores of reliable witnesses continue to report their sightings of UFOs, ghosts, crop circles, lake monsters, enormous cat-like beasts, Yeti, and Sasquatch, how can their observations be explained? We live in an immeasurably strange universe, miraculously suspended in space and time: a universe that has room for the mysteries of the ancient British King Arthur, Merlin, and the Holy Grail; the Oak Island Money Pit in Canada; the undeciphered Glozel Alphabet, and the Priest's Treasure at Rennes-le-Chateau in France; Mermaids and Sea Monsters; the Kingdom of Prester John; the Riddle of the Pictish Stones at Meigle in Scotland; the Vampire of Croglin Grange; Zombies and Wer-beasts; the Devil's Footprints in Devonshire; the Green Children of Woolpit; Lost Cities and Sunken Islands; Pyramids and Stone Circles; Telepathy, Telekinesis, Teleportation, and Prophecy. The list is endless. The investigations fascinating. The World's Greatest Unsolved Mysteries invites the reader to accompany Lionel and Patricia Fanthorpe on their many intriguing investigations in Canada and worldwide and their years of research into the unexplained.