The second detective grumbled something not clearly audible, and silence ensued.  But Temistocle had heard quite enough.  He was a quick-witted fellow, as has been seen, much more anxious for his own interests than for his master’s, though he had hitherto found it easy to consult both.  Indeed, in a certain way he was faithful to Del Ferice, and admired him as a soldier admires his general.  The resolution he now formed did honour to his loyalty to Ugo and to his thievish instincts.  He determined to save his master if he could, and to rob him at his leisure afterwards.  If Del Ferice failed to escape, he would probably reward Temistocle for having done his best to help him; if, on the other hand, he got away, Temistocle had the key of his lodgings, and would help himself.  But there was one difficulty in the way.  Del Ferice was in evening dress at the house of Donna Tullia.  In such a costume he would have no chance of passing the gates, which in those days were closed and guarded all night.  Del Ferice was a cautious man, and, like many another in those days, kept in his rooms a couple of disguises which might serve if he was hard pressed.  His ready money he always carried with him, because he frequently went into the club before coming home, and played a game of ecarte, in which he was usually lucky.  The question was how to enter the lodgings, to get possession of the necessary clothes, and to go out again, without exciting the suspicions of the detectives.

Temistocle’s mind was soon made up.  He crept softly down the stairs, so as not to appear to have been too near, and then, making as much noise as he could, ascended boldly, drawing the key of the lodgings from his pocket as he reached the landing where the two men stood under the little oil-lamp.

“Buona sera, signori,” he said, politely, thrusting the key into the lock without hesitation.  “Did you wish to see the Conte del Ferice?”

“Yes,” answered the elder man, affecting an urbane manner.  “Is the Count at home?”

“I do not think so,” returned the Neapolitan.  “But I will see.  Come in, gentlemen.  He will not be long—­sempre verso quest’ora—­he always comes home about this time.”

“Thank you,” said the detective.  “If you will allow us to wait—­”

“Altro—­what?  Should I leave the padrone’s friends on the stairs?  Come in, gentlemen—­sit down.  It is dark.  I will light the lamp.”  And striking a match, Temistocle lit a couple of candles and placed them upon the table of the small sitting-room.  The two men sat down, holding their hats upon their knees.

“If you will excuse me,” said Temistocle, “I will go and make the signore’s coffee.  He dines at the restaurant, and always comes home for his coffee.  Perhaps the signori will also take a cup?  It is the same to make three as one.”