The Hollow Needle: Further Adventures Of Arsene... -

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 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 . 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. A defining feature of (1909) is the introduction

The "Hollow Needle" refers to an ancient secret passed down by the Kings of France since the time of Julius Caesar. Lupin has mastered the codes protecting this legendary treasure, which includes the dowries of French queens and a hoard of priceless jewels. The "Hollow Needle" refers to an ancient secret