hardly know," replied Jerry. "I feel certain in my mind that they
robbed the Rockpoint Hotel in spite of what the detectives think."

"So do I. But we can't prove it."

The two boys resolved to watch Peters and Crosby and try to overhear any
private talk they might have.

Peters and Crosby entered a large music hall and sat down at one of the
tables.

Motioning to Harry, our hero led the way to the side of the building.

A board was off, and by standing near the opening they could hear
everything Si Peters and Wash Crosby said.

CHAPTER XXI.

WORDS AND BLOWS.

The very first words spoken by Si Peters confirmed the young oarsman's
suspicious.

"What did you do with the valise, Wash?" he asked.

"Left it on the yacht at the cove," replied Wash Crosby.

"That's where you made a big mistake."

"How so?" growled the toady.

"They might take it into their heads to search the yacht."

"Oh, I guess not."

"We don't want to run any chances of being found out."

"We're all right; don't worry."

"Perhaps we are and perhaps we are not."

"Oh, keep still, and let us enjoy the music," growled Crosby, for an
orchestra was now playing.

A waiter came up and Si Peters gave an order. Jerry was quite sure he had
ordered something stronger than what he was in the habit of drinking at
home. It was evident that the bully of Rockpoint had turned out even worse
than before.

"What shall we do?" whispered Harry.

"We ought to inform the police."

"Just my idea of it."

"I don't know if there are any officers around here."

"Oh, there must be."

They looked around, but in the darkness no policeman could be seen.

"You stay here and I'll go hunt up somebody," said Jerry.

Scarcely had he spoken, however, when their attention was attracted to a
row that was taking place in the concert hall. Two men were fighting, and
presently a chair flew through the air.

At once those sitting around tried to retire.

Peters and Crosby rushed out in the crowd, and not to lose sight of the
pair Jerry and Harry went after them.

Fifty feet from the concert hall the four came face to face. Si Peters
started back, and Wash Crosby wanted to run for it.

"Who--what?" stammered Peters.

"We have caught you," said Jerry, boldly. "You may as well give in."

"What do you mean?"

"We know that that you robbed the Rockpoint Hotel," said Harry.

"It's not so," cried Crosby.

"Shut up!" hissed Si Peters.

Without warn