Mysterialis: Untold Stories of Apparitions, Miracles and Madness, by Martin Cannon

From the back cover: It’s the strangest true story ever told — kept secret for more than a century. In 1901, over the course of three days, the inhabitants of a small French town saw extraordinary anomalies in the sky — a spectacle more astounding than any UFO sighting, a phenomenon so inexplicable as to make the so-called “miracle of Fatima” seem comparatively mundane. A respected scholar took depositions shortly after the events. The witnesses were numerous, and their testimony provided strong evidence that a paranormal event of unprecedented scope had occurred in Normandy. But when the story became linked to an explosive spy scandal, the authorities hid the facts.