ered that one of them had gone to get married, and the
other acted as best man at the ceremony.

The spy married a pretty French-Canadian girl.

His companion returned to La Croix's party and the bride and groom started
off on a short wedding trip.

Young King Brady dropped them.

"They'll be so busy spooning and lally-gagging that he won't have any time
to attend to this smuggling game," thought the boy detective, as he went
back to his partner to report the occurrence.

Old King Brady was watching the Frenchman's party.

Next day the smugglers boarded the cars for Niagara, and the Bradys felt
that their work would soon be at an end.

As the Custom House officers of Niagara had been specially warned against
these people, they made a very careful search of their baggage and persons.

Every one underwent a most rigid examination.

Not a thing or place was overlooked in which there was the faintest chance
of concealing precious stones.

But despite the keenness of the scrutiny--despite the extraordinary
watchfulness--despite every care--not a diamond was found.

The Bradys looked on eagerly.

Each one expected a remarkable disclosure.

But when they saw the officers baffled, it worried them.

They could not understand this want of success, except by thinking that the
La Croix party were playing some deep, shrewd game.

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,