Maurice Leblanc was a French novelist and short-story writer best known as the creator of Arsène Lupin, the gentleman thief whose elegance, disguises, wit, and daring made him one of the most recognisable figures in classic crime fiction. Born in Rouen in 1864, Leblanc began as a literary writer before finding lasting fame through Lupin, who first appeared in the early twentieth century and quickly became a French counterpart, rival, and inversion of the great detective tradition. Where Sherlock Holmes solved crimes from the side of law and order, Lupin moved through crime, justice, performance, and adventure with a more ambiguous charm.Leblanc's Lupin stories combine detective fiction, mystery, adventure, comedy, romance, and thriller elements. His plots often depend on secret identities, impossible crimes, hidden documents, coded messages, aristocratic houses, international schemes, and elaborate reversals. 813 is one of the most substantial and ambitious Lupin novels, placing the gentleman thief at the centre of murder, political conspiracy, and a mystery that reaches beyond ordinary crime.Leblanc's influence on mystery and adventure fiction has endured for more than a century. Arsène Lupin remains central to the tradition of gentleman-thief fiction and has inspired films, television adaptations, comics, manga, games, and modern reinterpretations around the world. Leblanc died in 1941, but his most famous creation continues to stand beside the great icons of classic crime literature: brilliant, theatrical, elusive, and irresistibly dangerous.