“The Corpse Synod” is the first book in the historical series “Kyrie Eleison” about medieval Italy of the late 9th - first half of the 10th centuries. This is the time of the final collapse of the empire of Charlemagne and the deepest moral decline of the Roman Catholic Church, which led to the trial of the deceased pope and the establishment in Rome and over the Holy See of the power of two women - the wife and daughter of Senator Theophylact, famous for their beauty and depravity. In the history of the Roman Catholic Church, this period is called “pornocracy” or “rule of whores.”