Freemasonry is the subject of perennial fascination-recently the cover story of a national newsmagazine, the premise of the movie National Treasure, and the anticipated basis of a forthcoming novel by Dan Brown. The twentieth century's great scholar of occult and esoteric ideas, Manly P. Hall was a Mason himself and nurtured a lifelong interest in the secret fraternal order, making it the focus of one of his earliest and best-loved books