. . . . . "Here in one far-reaching, illustrated volume is an intriguing collection of unexplained phenomena and mysterious happenings. From spirits and poltergeists, eerie balls of light, and unaccounted for objects dropping from the sky to USOs (unidentified submarine objects) and their occupants, this absorbing compendium documents hundreds of supernatural apparitions of the modern world." . . . "Unexplained mysteries of the 20th century" . . . . . .