"He guessed it but at first said nothing to me."
"How long has he known?"
"Since the night of the raid. At least that was when he first became suspicious. He thought Jimmie had tipped off the Molberg gang that their hideouts were to be raided."
"But how did Jimmie learn that?"
"Father unintentionally mentioned it at the breakfast table."
"It was immediately after the raid that Mr. Davis seemed to lose interest in the case," Penny said musingly.
"Yes, he was bewildered by the turn of events. I didn't know it until tonight, but he quietly set about watching Jimmie. In a short while he had learned the truth."
"And how did you know that Jimmie would be here tonight?" Penny questioned.
"He told me," Betty admitted. "For weeks I have pleaded with him to give up this dreadful life he has been leading. He promised me he would. But he said there was a special reason why he must drive the truck one more time."
"That was because the leader of the gang had threatened to tell Mr. Davis," Penny commented.