"Susan," she said, "Mrs. Masterbrook evidently knew Walter Crocker."
"Yes, that was queer, wasn't it?"
"She seemed to be afraid of him," Penny went on in a low voice. "Or rather, she appeared to fear that someone would find him here at the cottage. What do you make of it?"
"I think," drawled Susan, "that the mystery is a long way from explained."
"And I agree with you," said Penny, "but these letters may help a little. Come on, let's go down to the ravine and read them."
CHAPTER XVI
A Lost Handkerchief
The girls ran down the path to the ravine, selecting a sunny spot by a large rock. From where they sat they could look far down the valley and see the swinging footbridge which Herman Crocker had designated as a meeting place with his nephew.
"Well, here are the letters," Penny said gaily, removing them from her dress. "Wouldn't Walter rave if he knew we had them!"