This is the story of a mystery, this is a crime novel, a noir novel, a gothic novel, a romance. This novel belongs to the series of "The mysteries of Cortona". In this story, Don Virgilio P. a catholic priest, is helped by other characters, especially females: Sister Constanza, the young Consiglia, the faithful Perpetua, the artist Elena and others. A country priest, shy, curious and haughty. If necessary philosopher, demonologist, exorcist, agronomist, alchemist, astronomer, antiquarian and veterinarian; always around with the bike, up and down the countryside of Arezzo, Siena, the Chianti. Here is the figure of Don Virgilio P. from Cortona. The priest moves with particular ease among the enigmas of the human soul; among the crimes of real life, as well as among the mysteries of the unknown. He looks discreetly on the scenes of crimes and mysteries, often, but not always, set among the green Tuscan hills. Behind the anonymous appearance hides, however, one of the sharpest minds that has ever crossed those places. Don Virgilio for years has listened, in the secret of the confessional, errors and horrors of men, thus learning to untie the most difficult knots.