Should we be afraid of UFOs? In June 2021, the head of NASA admits that "pilots of military aircraft have seen something, and their radars have locked onto it. But they don't know what it is. We just hope it's not an adversary here on Earth that has mastered this kind of technology." The fear? That the "unexplained phenomena" are the sign of an advance, terrestrial or extraterrestrial, accompanying an aggressive project that would be in its infancy. In April 2022, a Pentagon report counted 57 effects suffered by people in contact with a UFO: alien abductions, brain damage, paralysis, radiation burns and death.Egon Kragel, an outstanding storyteller, has investigated dozens of cases in which witnesses have not emerged unscathed from encounters with UFOs. In a rigorous book full of anecdotes, the author reveals unpublished archives, probes the credibility of testimonies and questions the official thesis that UFOs represent a danger to humanity.No reader will come away unscathed from this new paving stone thrown into the pond of official (in)certainties!