"Exactly like Michel!" exclaimed Valentine, unable to conceal her surprise and growing uneasiness. "How strange!"

"What do you mean, madame?"

"Why, yesterday, I discovered that M. Michel Renaud lives on the fourth floor, in Number 57, and that, like Florence, he goes out at four o'clock every morning, and never returns before midnight."

"What can this mean?" exclaimed M. de Luceval. "Michel and my wife living on the same floor in adjoining houses, and going out and returning home at the same hour?"

"Does Florence know Michel?"

"M. Renaud is my cousin, and now I think of it, shortly after you left Paris, madame, he came and asked me to introduce him to my wife, upon whom he afterwards called a number of times. But now I think of it, you must know M. Michel Renaud very well yourself, as you feel sufficient interest in him to follow him."

"I will tell you all, monsieur," replied Valentine, blushing, "for I am as deeply interested in solving this mystery as you can possibly be."

"Ah, madame," exclaimed M. de Luceval, gloomily, "more than once, during my long absence, I experienced all the tortures of jealousy when I thought of Florence, free! Free! oh, no, in spite of our separation, the law gives me the right to avenge the wrong, if the woman who still bears my name is guilty, and this man—this man! Oh, if I were sure of his guilt, I would challenge him before another hour had passed, and either he or I—"

"Pray calm yourself, monsieur," said Madame d'Infreville, "strange as all this seems, there is really nothing that implicates Florence in the least. This morning she left home at the same hour Michel did, it is true; but though it was still dark, and the street was deserted, they did not exchange a single word, and held themselves sedulously aloof from each other."

"Still they leave home and return at the same hour! Where do they go? How do they spend all this time? They undoubtedly meet each other, but where?"