Great Mysteries of the 20th Century presents the most profound puzzles of the century. Deaths in mysterious circumstances, like that of the Italian banker Roberto Calvi￯﾿ﾽunexplained evidence at the heart of historic events, such as the assassination of President Kennedy strange disappearances, like that of Agatha Christie, a story worthy of one of her own novels￯﾿ﾽparanormal phenomena, like the heavenly vision that appeared to three Portuguese children at Fatima￯﾿ﾽand mysteries of modern science. It might be possible to dismiss all paranormal reports as products of the fallible human mind, were it not that modern science itself challenges every common sense belief about space and time. Black holes, it appears, may act as conduits into another dimension. Time, it seems, does not run in a ruler-straight line, past, present and future may exist simultaneously. The great mysteries of the 20th century warn at every turn against the closed mind; the best we can do is to sift the evidence and acknowledge all realms of possibility.