1774, the death of Louis XV forces Sartin, chief of the Châtelet commissary Nicolas Le Flock, to resign as lieutenant general of police. Sartine's successor is a certain Lenoir, under whose leadership Nicolas is entrusted with investigating the murder of a maid found with her throat cut in the mansion of Monsieur Saint-Florentin, the minister of the new king. The search for the killer will have to be carried out not only in Paris, but beyond its borders and even at the court of Louis XVI in Versailles, where, among other things, Nicolas will have the difficult task of strengthening his shaky position... “Murder at the Saint-Florentin Mansion” - the fifth volume about the investigations of Commissioner Chatelet Nicolas Le Flock, from a series of novels by the popular French author Jean-François Parot.