Masks of the Illuminati
Masks of the Illuminati is a 1981 novel by Robert Anton Wilson, co-author of The Illuminatus! Trilogy and over thirty other influential books. Although not a sequel to the earlier work, it does expand information on many of the topics referred to in the trilogy.

The novel features numerous real-life historical figures in its narrative, including a first person description of reality by scientist Albert Einstein and Irish author James Joyce, while the plot involves English author and occultist Aleister Crowley, British nobles, the Loch Ness Monster and mystical experiences.

The plot revolves primarily around the description by a young English gentleman, Sir John Babcock, of his initiation into the Argenteum Astrum. Ancestors of Sir John are major characters in The Historical Illuminatus Chronicles.
Fantasy, Fiction, Fiction, visionary & metaphysical, Science fiction
Robert Anton Wilson
Robert Anton Wilson (born Robert Edward Wilson; January 18, 1932 – January 11, 2007) was an American author, novelist, essayist, editor, playwright, poet, futurist, and self-described agnostic mystic. Recognized by Discordianism as an Episkopos, Pope, and saint, Wilson helped publicize the group through his writings and interviews.

Wilson described his work as an "attempt to break down conditioned associations, to look at the world in a new way, with many models recognized as models or maps, and no one model elevated to the truth".[1] His goal being "to try to get people into a state of generalized agnosticism, not agnosticism about God alone but agnosticism about everything."[2]

Wilson was a major figure in the counterculture, comparable to one of his coauthors, Timothy Leary, as well as Terence McKenna and others.[3]