Gray Barker stood at the heart of America"s UFO phenomenon almost from its inception. His investigations led to the publication of his best selling book, “They Knew Too Much About Flying Saucers.” SHADES OF GRAY peels the layers away of one of the great American hoaxers of the twentieth century. Barker single-handedly created or perpetuated much of what is now the `gospel` of UFOs. This documentary strives to present a complete picture of a complicated, and ultimately influential, modern American myth-maker.