The mystery centers on the "Aiguille Creuse." While Beautrelet initially believes it refers to a specific castle ( Château de l'Aiguille ), he eventually discovers it is a literal geological feature—a hollowed-out rock needle hidden in the cliffs of Étretat, Normandy .
A defining feature of (1909) is the introduction of Isidore Beautrelet , a brilliant 17-year-old high school student who becomes Arsène Lupin’s most formidable rival. The Hollow Needle: Further Adventures of Arsene...
The book is famous for its intricate game of "cat and mouse," featuring complex ciphers and Lupin's signature use of multiple disguises to stay ahead of the law. The mystery centers on the "Aiguille Creuse
Unlike the lighter "gentleman thief" stories, this novel presents a more ruthless Lupin who engages in kidnappings and violent threats, resembling a master criminal or Bond villain. Unlike the lighter "gentleman thief" stories, this novel