“Can I gain admittance by stealth or cunning?”
“Impossible.”
“Then there is only one way open to me. I must have the owner of the castle invite me to it.”
“That is surely an original method.”
“And how easy! Let us suppose that one day the owner receives a letter warning him that a notorious burglar known as Arsène Lupin is plotting to rob him. What will he do?”
“Send a letter to the Procureur.”
“Who will laugh at him, because the said Arsène Lupin is actually in prison. Then, in his anxiety and fear, the simple man will ask the assistance of the first-comer, will he not?”
“Very likely.”
“And if he happens to read in a country newspaper that a celebrated detective is spending his vacation in a neighboring town—-”
“He will seek that detective.”