"Of course I have!" was the reply.

"Then use them on these two boys!" ordered Katz. "Tie them together so they won't be apt to go chasing off if we get into action."

Cullen did as requested, and the boys, unable to make resistance at that time, resolved that both officers should pay well for the indignity in the future. When the detectives started forward, they walked as slowly as possible, one of them frequently falling down, in order to give the person in the cavern, whoever he might be, plenty of time to observe the approach of the detectives.

"Gee!" exclaimed Tommy. "These fellows blunder along like a load of hay. If the man over there has any sense, he'll be a mile off before they get to the entrance! I hope the train robbers are there!"

"Well, I hope Wagner isn't there," George said.

There were no signs of light as the two detectives scrambled up the little slope which lay between the bottom of the gulch and the entrance to the cavern. The faint smell of burning wood reached their nostrils, but no one was in sight. They stepped inside boldly.

Following along behind, more as a matter of curiosity than because they felt obliged to do so, the boys saw the detectives standing in the twilight of the place looking about. Then they saw them drop their arms to their sides, heard the clatter of revolvers upon the rocky floor and realized that something unexpected was taking place inside.

Directly the detectives came out to the entrance and sat down on the hard floor, their backs against the south wall. The boys looked them over with pleased eyes, and Tommy went so far as to wrinkle his freckled nose at Katz, who frowned savagely but said nothing.

"Look here, you fellows," Katz finally blurted out. "I want you to understand that you're getting yourselves into trouble."

"Is that so?" came a hoarse and scornful voice from the darkness.