Examples of Illuminati books are Dan Brown's "Angels & Demons" and "The DaVinci Code" as well as Fritz Springmeier's "Bloodlines of the Illuminati." The Illuminati, which these books are centered around, is a secret society.
A man named Adam Weishaupt defected from the Catholic church in the 1760s and is credited for forming the modern Illuminati, backed by international bankers. The group's goal is to achieve a "one-world government" and gain control over all governments and religions in the process. Many of the books written on or around the Illuminati involve plots to overthrow governments or major religious organizations, such as the Vatican.
There are many Illuminati books that have been written in the past. Not only a good book, but a great trilogy, was "The Illuminatus! Trilogy" first published in 1975. Robert Anton Wilson and Robert Shea put together this series of books that exposed many conspiracy theories.
The books jump around in time and give the authors' perspectives on many topics that surround the Illuminati. Doing so creates a world of thinking for the reader, which leads them to continue through the entire series of three books. This trilogy of books later went on to win the Prometheus Hall of Fame Award in 1986.