"But, tell me, monsieur, who are you?"

"What, monsieur le duc, don't you know my voice? The voice of your future son-in-law?"

"What!"

"Arsène Lupin."

The duke dropped into a chair. His face was livid.

"Arsène Lupin ... it's he ... Arsène Lupin...."

Angélique gave a smile:

"You see, father, it's only a joke, a hoax."

But the duke's rage broke out afresh and he began to walk up and down, moving his arms:

"I shall go to the police!... The fellow can't be allowed to make a fool of me in this way!... If there's any law left in the land, it must be stopped!"