This book traces the machinations of the world's best known secret fraternity as it has operated historically in the United States, particularly with regard to its unrelenting warfare against Christianity, especially the Catholic Church. Perhaps most stunning of all is the book's revelation regarding the fraternity's successful efforts, beginning in 1940 and continuing through 1971, to shape U.S. Supreme Court' First Amendment religious clauses decisions and, thus change America's previous Christian orientation to an ambience that is almost totally secular and, more or less, hostile to Christian values. Also the long history of Justice Hugo L. Black's religious prejudices are carefully examined, including his lifetime membership in the Ku Klux Klan, and his Constitutional ineligibility to serve on the high bench. Moreover, the work documents that for the first time in its history the Supreme Court was dominated by Freemasons in ratios of 5-4 to 8-1 during the period 1940- 1971. Behind The Lodge Door is based primarily on an examination of Scottish Rite Freemasonry's flagship monthly publication, The New Age magazine, for each of the 12-month periods 1921- 1981, augmented by documents (several formerly classified "SECRET") in the National Archives, various major newspapers, Congressional debates, House and Senate hearings, selected Congressional acts, Presidential Inaugural Addresses, Internal Revenue documents,and many Supreme Court decisions bearing on the religion clauses.