“Oh,” said the viscount, “those gentlemen have heard of the Opera ghost. Well, I am in a position to state that the Opera ghost and the Angel of Music are one and the same person; and his real name is Erik.”

M. Mifroid rose and looked at Raoul attentively.

“I beg your pardon, monsieur, but is it your intention to make fun of the law? And, if not, what is all this about the Opera ghost?”

“I say that these gentlemen have heard of him.”

“Gentlemen, it appears that you know the Opera ghost?”

Richard rose, with the remaining hairs of his mustache in his hand.

“No, M. Commissary, no, we do not know him, but we wish that we did, for this very evening he has robbed us of twenty-thousand francs!”