The author warns that the novel is not suitable for female perception. This is the bedlam of erotomania, devilish Sabbaths of satiated fornicators and satanic masses of half-crazed witches - and all this becomes the field of the Dominican monk Geronimo Imperiali, who, while still in the monastery, was selected to work in the Inquisition, where one of the forty brethren ended up. His teachers note his talent as an investigator and his extraordinary mind, while he is also endowed with amazing beauty, a gift that is tempting and dangerous... for the monk himself. Sent to Trento, a small city in northern Italy, Imperiali must first find out the reasons for the death of Fogazzaro Gozzano, his predecessor, who was found dead in a local prodigal house...