Croisenois bowed. “I am a dead man,” thought he as he glanced towards the Duchess, “and not for your sake, but on account of quite another woman.”

The sound of his own voice excited Norbert, and he went on more rapidly: “What need have I to risk my life in a duel? I come to my own home, I find you with my wife, I blow out your brains, and the law will exonerate me.” As he said these last words, he drew a revolver from his pocket and levelled it at George. The moment was an intensely exciting one, but Croisenois did not show any sign of emotion, Norbert did not press the trigger, and the suspense became more than could be borne.

“Fire!” cried George, “fire!”

“No,” returned Norbert coldly; “on reflection I have come to the conclusion that your dead body would be a source of extreme inconvenience to me.”

“You try my forbearance too far. What are your intentions?”

“I mean to kill you,” answered Norbert in such a voice of concentrated ferocity that George shuddered in spite of all his courage, “but it shall not be with a pistol shot. It is said that blood will wash out any stain, but it is false; for even if all yours is shed, it will not remove the stain from my escutcheon. One of us must vanish from the face of the earth in such a manner that no trace of him may remain.”

“I agree. Show me how this is to be done.”

“I know a method,” answered Norbert. “If I was certain that no human being was aware of your presence here to-night——”

“No one can possibly know it.”

“Then,” answered the Duke, “instead of taking advantage of the rights that the law gives me and shooting you down on the spot, I will consent to risk my life against yours.”