The young man shifted his weight uneasily. "Oh, by the way," he said, "I don't suppose you found a package of letters in the rumble seat?"
"Letters?" repeated Penny.
"I thought perhaps they might have dropped from my pocket while I was riding with you."
"Were they valuable?" asked Penny very innocently.
"Only to me," answered Walter Crocker shortly. "But I must have them back. Do you mind if I look in the back end of your car?"
"You'd be welcome to search if it were here."
"Where is the car?" demanded the man, in his anxiety forgetting to be polite.
"I couldn't say right now, Mr. Crocker. My father has the automobile."
"When will he return?"
"Probably not before evening," Penny replied, thinking quickly. "You might drop back after supper. He should be here by then."