This book explores the principal UFO and associated phenomena that have occurred in Wales in the last 120 years. Non-fiction audience, particularly those who are interested in a) Celtic history and folklore; b) increasing instances of UFO phenomena, especially those in Wales; c) evolving scientific and parapsychological research concerning the origins of such phenomena, in particular areas of research into fairy-lore and other associated mythology parallels.

Part 1, Events, reviews in detail the Egryn Lights in Barmouth 1995-1906, the Berwyn Mountains event of 1974 (the Welsh "Roswell") during which witnesses observed the retrieval of alien bodies and their purported removal to Porton Down, the remarkable Pembrokeshire flaps of 1977, and the extraordinary sightings over Pentyrch of 2016, which reportedly culminated in the bringing down of an alien craft by the RAF in Smaelog Wood near Llantrisant.

Part 2, Anomalies, sets out the increasing belief in scientific, ufology and cultural research quarters that UFOs originate not in a galaxy far away but in the dimensions of a multiverse whose component regions interlace with our Earth. These investigations highlight the remarkable theory advanced by the US Dept of Defense and expert thinkers such as Carl Jung, Jacques Vallee, John Michell and John Keel that UFO travellers and the fairy folk of myth and legend share a common origin.