The most serious and rigorously sourced book ever published on UFOs. An eye-opening exposé on the greatest cover-up in human history. For over fifty years, Jonathan Caplan KC, one of the UK's leading barristers, has gathered extraordinary testimony from scientists, intelligence officers, politicians and military insiders across the world - assembling the most comprehensive body of evidence yet on the existence of UAPs (previously known as UFOs). Utterly gripping, impossible to ignore, and drawing on never-before-seen declassified documents, eyewitness testimony and insider claims, as well as sightings, encounters and abductions, Caplan's landmark book will challenge everything you think you know.