Germaine de Gournay-Martin, daughter of a very upper class family, just bought the castle Charmerace, and will finally, after seven years of engagement, be wedding penniless former owner, Jacques, Duke of Charmerace. Conversations quickly turn to the recent exploits' of Arsene Lupin who did not hesitate to fly all collections of paintings by his future stepfather, for the viewer suspects quickly, Charmerace and Lupin are one. Contents: The Millionaire's Daughter; The Coming Of The Charolais; Lupin's Way; The Duke Intervenes; A Letter From Lupin; Again The Charolais; The Theft Of The Motor-cars; The Duke Arrives; M. Formery Opens The Inquiry; Guerchard Assists; The Family Arrives; The Theft Of The Pendant; Lupin Wires; Guerchard Picks Up The True Scent; The Examination Of Sonia; Victoire's Slip; Sonia's Escape; The Duke Stays; The Duke Goes; Lupin Comes Home; The Cutting Of The Telephone Wires; The Bargain; The End Of The Duel.