For those who may be interested in fiction regarding the occult, there are two book that may be of interest.
Wolf on a String is, according to Publishers Weekly, a brooding, atmospheric whodunit set in 16th-century Prague. Christian Stern, the bastard son of the Prince-Bishop of Regensburg, has arrived in that city in the hopes of winning the favor of Rudolf II, the ruler of the Holy Roman Empire, and obtaining a place among the court’s learned men, such as astrologer Johannes Kepler and Tycho Brahe. The first night he spends in Prague, Stern finds Magdalena Kroll—the teenage daughter of Dr. Ulrich Kroll, Rudolf’s physician and “one of his chief wizards”—lying in a snowy street with her throat slit. Initially a suspect, Stern soon becomes the emperor’s designated investigator. In order to discover the truth behind the murder, he must navigate a realm in which no one can be fully trusted. Superior prose (Magdalena’s head rests in a pool of blood, a “black round in which the faint radiance of the heavens faintly glinted”) complements the intricate plot. Author Benjamin Black is the pen name of Man Booker Prize–winner John Banville.
Notably, Banville's novel Kepler was published in 1981. In a brilliant illumination of the Renaissance mind, acclaimed Irish novelist John Banville re-creates the life of astrologer Johannes Kepler and his incredible drive to chart the orbits of the planets and the geometry of the universe. Wars, witchcraft, and disease rage throughout Europe. For this court mathematician, vexed by domestic strife, appalled by the religious upheavals that have driven him from exile to exile, and vulnerable to the whims of his eccentric patrons, astronomy is a quest for some form of divine order. For all the mathematical precision of his exploration, though, it is a seemingly elusive quest until he makes one glorious and profound discovery.