This is the first collection of stories by Maurice Leblanc recounting the adventures of Arsène Lupin. It contains the first nine stories depicting the character, published in the 1900s: "The Arrest of Arsène Lupin", "Arsène Lupin in Prison", "The Escape of Arsène Lupin", "The Mysterious Traveler", "The Queen's Necklace", "Seven of Hearts", "The Safe of Madame Imbert", "The Black Pearl", and "Sherlock Holmes Arrives Too Late". After protests from Arthur Conan Doyle's lawyers, Sherlock Holmes, in "Sherlock Holmes Arrives Too Late", was changed in subsequent publications to Herlock Sholmes.