"Remember that it is always at the very moment at which you are going to triumph that he beats you, that he only lets you reach the top of the ladder to throw you more easily to the ground." "Confess, then, that you are Lupin," muttered Guerchard.
"I thought you were sure of it," said the Duke in a jeering tone.
Guerchard dragged the handcuffs out of his pocket, and said between his teeth, "I don't know what prevents me, my boy." The Duke drew himself up, and said haughtily, "That's enough." "What ?" cried Guerchard.
"I say that that's enough," said the Duke sternly.

"It's all very well for me to play at being familiar with you, but don't you call me 'my boy.'" "Oh, you won't impose on me much longer," muttered Guerchard; and his bloodshot, haggard eyes scanned the Duke's face in an agony, an anguish of doubting impotence.
"If I'm Lupin, arrest me," said the Duke.
"I'll arrest you in three minutes from now, or the coronet will be untouched," cried Guerchard in a firmer tone.
"In three minutes from now the coronet will have been stolen; and you will not arrest me," said the Duke, in a tone of chilling certainty.
"But I will! I swear I will!" cried Guerchard.
"Don't swear any foolish oaths! ...

THERE ARE ONLY TWO MINUTES LEFT," said the Duke; and he drew a revolver from his pocket.
"No, you don't!" cried Guerchard, drawing a revolver in his turn.
"What's the matter ?" said the Duke, with an air of surprise.

"You haven't forbidden me to shoot Lupin.

I have my revolver ready, since he's going to come....