"La Comtesse de Cagliostro" is a novel written by the French author Maurice Leblanc. Maurice Leblanc is best known for his creation of the famous fictional character Arsène Lupin, a gentleman thief and master of disguise. This novel likely features elements of mystery and adventure, which are typical of Leblanc's works. It may involve Arsène Lupin's clever and charismatic character, who often finds himself involved in intricate heists and investigations. The title "La Comtesse de Cagliostro" suggests a connection to the historical figure Count Cagliostro, who was an adventurer and occultist in the 18th century. Leblanc's stories often blend elements of history, mystery, and intrigue. Keywords: Maurice Leblanc, "La Comtesse de Cagliostro," mystery, adventure, Arsène Lupin, historical references, heists, investigations.