It is not for nothing that Moriarty was otherwise known as the Napoleon of crime, that Poe's Chevalier Dupin invented ratiocination from a comfortable armchair in a darkened room in Paris, or, for that matter, that Sherlock Holmes takes such pains to scoff at the French police, notably a certain detective named Lecoq, who, he claims, 'was a miserable bungler'. French contributions to the development of crime fiction, in particular the detective story, are significant in the sense that one cannot conceive of the developments in nineteenth-century English detective fiction without them. Holmes's arrogance towards the continental police, notably the French, nevertheless bespeaks a certain amount of insecurity with regard to the fearsome reputation of the French police established during Fouchè's reign of terror under Napoleon, a reputation further consolidated throughout the nineteenth century.