“You have an account to settle with me?” asked Daddy Tantaine with a puzzled smile.

“Yes; was it not through you that I was accused of theft by that old hag, Madame Loupins?”

Tantaine shrugged his shoulders.

“Dear me,” said he; “I thought that M. Mascarin had explained everything, and that you were anxious to marry Mademoiselle Flavia, and that, above all, you were a young man of intelligence and tact.”

Hortebise roared with laughter, and Paul, seeing his folly, blushed deeply and remained silent.

“I regret having disturbed you, doctor,” resumed Tantaine, “but I had strict orders to see you.”

“Is there anything new then?”

“Yes; Mademoiselle de Mussidan is out of danger, and M. de Croisenois can commence proceedings at once.”

The doctor drank off a glass of wine.  “To the speedy marriage of our dear friend the Marquis and Mademoiselle Sabine,” said he gayly.

“So be it,” said Tantaine; “I am also directed to beg M. Paul not to leave this house, but to send for his luggage and remain here.”

Hortebise looked so much annoyed that Tantaine hastened to add:  “Only as a temporary measure, for I am on the lookout for rooms for him now.”

Paul looked delighted at the idea of having a home of his own.

“Good!” exclaimed the doctor merrily.  “And now, my dear Tantaine, as you have executed all your commissions, you can stay and breakfast with us.”

“Thanks for the honor; but I am very busy with affairs of the Duke de Champdoce and must see Perpignan at once.”  As he spoke he rose, making a little sign which Paul did not catch, and Hortebise accompanied him to the door of the vestibule.  “Don’t leave that lad alone,” said Tantaine; “I will see about him to-morrow; meanwhile prepare him a little.”

“I comprehend,” answered Hortebise; “my kind regards to that dear fellow, Perpignan.”

This Perpignan was well known—­some people said too well known—­in Paris.  His real name was Isidore Crocheteau, and he had started life as a cook in a Palais Royal restaurant.  Unfortunately a breach of the Eighth Commandment had caused him to suffer incarceration for a period of three years, and on his release he bloomed out into a private inquiry agent.  His chief customers were jealous husbands, but as surely as one of these placed an affair in his hands, he would go to the erring wife and obtain a handsome price from her for his silence.

Mascarin and Perpignan had met in an affair of this kind; and as they mutually feared each other, they had tacitly agreed not to cross each other’s path in that great wilderness of crime—­Paris.  But while Perpignan knew nothing of Mascarin’s schemes and operations, the former was very well acquainted with the ex-cook’s doings.  He knew, for instance, that the income from the Inquiry Office would not cover Perpignan’s expenses, who dressed extravagantly, kept a carriage, affected artistic tastes, played cards, betted on races, and liked good dinners at the most expensive restaurants.  “Where can he get his money from?” asked Mascarin of himself; and, after a long search, he succeeded in solving the riddle.