The gentleman thief has a new adversary—young and ambitious Isidore Botrelle, who manages to get on the trail of the biggest of Arsène Lupin’s mysteries: the secret of the mysterious “Empty/I hollow Needle.” The public watches the clash of two minds, and Lupin’s longtime “enemies” join in to catch him—Inspector Ganimard and Herlock Sholmes, each intending to corner the criminal by his own means. But none of them yet understands what game it is and for what purpose Arsène Lupin has planned it this time—and how he intends to get out when there will be nowhere for the pursuers to go from their encirclement.