Stunned, dazed, bewildered at this youth’s daring, he again took flight, Bob at his heels.

Had the revolver not been taken from him by the crowd of people, Bob would have been tempted to open fire.

Suddenly a man appeared not far away, and Bob called to him for assistance. The stranger finally grasped the meaning, and not questioning the cause of the chase, started after the criminal from another direction.

“We’ve got him,” panted Bob, as he came within an arm’s reach. “It’s all over now.”

And so it was. With a terrific crack to the chin the youth sent his enemy to the ground unconscious.

“But what does this all mean?” demanded the stranger who had helped in the capture.

“He’s a criminal,” Bob answered. “Set a garage on fire. Tell you later if you’ll give me your name and address. Mine’s Bob Holton. I live at——Wait, here’s one of Dad’s cards.”

The stranger accepted the card and in turn gave his name and address, but it was evident that he was very much puzzled about the whole affair.

The criminal’s eyes were opening, and he squirmed about uneasily. At last he seemed fully revived and sat up.