“That’s so,” said Casco. “Come on, we are four to two.”

He ran ahead, and the others quickly followed.

Frank saw them coming, and he whipped up his horse.

“We must drive for it, Bob!” he cried. “They are too many for us.”

“I would rather stand and fight it out,” returned the young photographer.

But Frank urged him to follow, and to please his companion Bob did so. As Barker and his companions were on foot they soon outdistanced the crowd, and then Bob called Frank to hold up.

“What’s best to do now?” questioned the young man.

“I have a plan,” said Bob. “You go back to Dartinville and wait for the detectives while I keep my eyes on this crowd.”

“That’s asking too much of you, Bob.”

“No, it isn’t. I will follow them wherever they go, and I will leave a paper trail behind me so that you and your men can follow me up. That will be the easiest way of tracking them down.”