The Frenchman laughed sardonically at the officers and said: 

“Ah, Messieurs, zis ees ze time I fool you! Comprong?”

“If any of your party have anything contraband,” grimly answered the officer, in disappointed tones, “you must have swallowed it.”

“Zen why you not examine us wiz ze X-ray?” chuckled La Croix.

“I’d like to take you at your invitation, you are such a slippery customer,” growled the officer, who had had some experience with him before.

The party were permitted to go.

They headed for the International hotel and as the Bradys had already arranged to go there, they followed the Frenchman’s party.

Upon the arrival of the officers, a legal envelope was handed to Old King Brady, and he opened it and withdrew a warrant for Clara La Croix.

“No need of this, yet,” he grumbled, holding it up.

“We may want it very soon,” replied Harry.  “They had the diamonds, and if they’ve eluded our vigilance, or given them to anyone else to smuggle over, they’ll have to get the jewels away from the smuggler and that will be the time for us to grab them.”

Several days passed by, during which La Croix’s three spies returned to Canada, as they were then of no further service.

The day after they had gone, the fourth spy, who had got married, suddenly came over from Canada with his bride, and the detectives saw them go to the hotel where the La Croix party was stopping.

With their suspicions aroused, the Bradys watched them.

They went up to the clerk, sent their card to La Croix’s room, and Clara presently came down and greeted them warmly.

“Papa is shaving,” she remarked.  “Can’t you come to my room?  I’ll try to entertain you until he is disengaged.”

She had abandoned her widow’s weeds and resumed her wonted attire in which she looked very young and charming.

The bride smiled, patted her on the head and said: 

“I like you.  Nothing would please me better.”

The moment she assented, the Bradys hastened upstairs.

Clara’s room was open and they entered and glanced around.

It was a magnificently-furnished apartment and the trunk she brought over from France stood in the middle of the room.

At one side was a closet.

The Bradys dodged into it and closed the door.

No sooner were they concealed when Clara and her two guests came in and at her invitation, seated themselves.

“Well?” said the girl smuggler, in eager tones, “how did you make out?”

“Fine,” laughed the spy, producing a package from his pocket.  “We kept the diamonds and remained in Canada, spending our honeymoon.  When we started for the American side, my wife had the package of diamonds fastened under the lining of her skirt.  No one suspected us, of course.  The officers only made a careless examination of our satchel and valise.  We had no trouble whatever.”