A collection of the twenty greatest mysteries, according to the authors' perspective. The book records phenomena and events that defy the laws of physics, recorded history, and the laws of probability, creating an enigmatic puzzle of unexplainable phenomena and strange narratives, from the Holy Light, the Crop Circles, and the Shroud of Turin, to Atlantis, the Sphinx, the Crystal Skulls, Spirit Recordings, the Dew Drops in Crete, and many more.