Unexplained: Great Mysteries of the 20th Century

The Unexplained surveys reported mysteries and paranormal claims across the 20th century, arranged chronologically from the opening years of modernity to the approach of the new millennium. Jenny Randles places these accounts alongside changing science, technology and society, showing how ideas about the unknown developed during the century.

Its subjects include wartime portents, UFO reports, alien encounters, the space race, time travel and challenges to accepted explanations. Later sections consider psychic phenomena, ghosts, haunted technology and other claims associated with the paranormal. The book also touches on strange deaths, scientific enigmas and the cultural impact of unexplained events, presenting them as cases for investigation rather than settled supernatural fact.