"Wait!" cried Dick to Tom, who was on the point of exposing himself. "Don't show yourself now. Help may be at hand. Besides, those men will shoot as soon as they see us, now."

"What did that shot mean?"

"I don't know. Maybe it was a signal."

"If we could only let Sam know that we are at hand."

Further words were cut short by another shot, and a moment later four men came riding up at top speed along the wagon trail.

"Hullo, what's up here?" came in the voice of Sack Todd.

"Had a break-down," growled Andy Jimson. "What are you shooting for?"

"Just got word that somebody has gone to town for assistance to round us up. We must change our plans. You'll have to let the wagon stay where it is and take to the horses. Luckily, we have some extra ones along. Be quick."

"What of the prisoner?"

"We'd better let him go."