Taxil hoax

The Taxil hoax was an 1890s hoax of exposure by Léo Taxil, intended to mock not only Freemasonry but also the Catholic Church's opposition to it. Taxil, the author of an anti-papal tract, pretended to convert to Catholicism (circa 1884) and wrote several volumes, purportedly in the service to his new faith. These included the adventures of one Dr. Bataille, a surgeon serving in the French merchant navy who has infiltrated the Freemasons and observes their evil rituals as they occur all over the world. Buddhists, Hindus, and Spiritualists join with Freemasons in conspiring against the Catholic Church, and Bataille uncovers an even more secret order within the Masons called the Palladists, who take their orders directly from demons. As Dr. Bataille's tale unfolds, he introduces Diana Vaughan, a former high priestess of Palladism who has converted to Catholicism and is in grave danger of assassination from vengeful Freemasons.

In 1897, Taxil called a press conference at which he promised to produce Vaughan. Instead he declared that his revelations about the Freemasons were made up. Nine years later he told an American magazine that he at first thought readers would recognize his tales as "amusement pure and simple"—too outlandish to be true—but when he realized they believed them and that there was "lots of money" to be made in publishing them, he continued to perpetrate the hoax.

Léo Taxil was the pen name of Marie Joseph Gabriel Antoine Jogand-Pagès, who had been accused earlier of libel regarding a book he wrote called The Secret Loves of Pope Pius IX. On April 20, 1884, Pope Leo XIII published an encyclical, Humanum genus, that said that the human race was:

separated into two diverse and opposite parts, of which the one steadfastly contends for truth and virtue, the other of those things which are contrary to virtue and to truth. The one is the kingdom of God on earth, namely, the true Church of Jesus Christ... The other is the kingdom of Satan... At this period, however, the partisans of evil seems to be combining together, and to be struggling with united vehemence, led on or assisted by that strongly organized and widespread association called the Freemasons.

After this encyclical, Taxil underwent a public, feigned conversion to Catholicism and declared his intention of repairing the damage he had done to the true faith.

The first book produced by Taxil after his conversion was a four-volume history of Freemasonry, which contained fictitious eyewitness verifications of their participation in Satanism. With a collaborator who published as "Dr. Karl Hacks", Taxil wrote another book called Le Diable au XIXe siècle (The Devil in the Nineteenth Century), which introduced a new character, Diana Vaughan, a supposed descendant of the Rosicrucian alchemist Thomas Vaughan. The book contained many tales about her encounters with incarnate demons, one of whom, a devil snake, was supposed to have written prophecies on her back with its tail, and another who played the piano while in the shape of a crocodile.

Diana was supposedly involved in Satanic Freemasonry but was redeemed when one day she professed admiration for Joan of Arc, at whose name the demons were put to flight. As Diana Vaughan, Taxil published a book called Eucharistic Novena, a collection of prayers which were praised by the Pope.^{[citation needed]}

In the Taxil hoax, Palladists were members of an alleged Theistic Satanist cult within Freemasonry. According to Taxil, Palladism was a religion practiced within the highest orders of Freemasonry. Adherents worshipped Lucifer and interacted with demons.