"How could I when I didn't know anything about it myself until an hour ago? That's the way Dad does things, Susan."
"I suppose you're going off on another one of those exciting mystery cases," Susan said enviously.
"I only wish we were," sighed Penny. "This vacation won't be a bit exciting. Dad just wants a complete rest at a quiet place. He says he'll not even think about work while we're gone."
"What sort of place is Knob Hill?"
"From all I can learn it's just a dead spot on the map," Penny declared. "And we've rented a cottage sight unseen."
"Oh, it may not be half bad," said Susan encouragingly. "You'll probably be able to do a lot of interesting things—swim, hike or ride."
"Not at Knob Hill," replied Penny, shaking her head. "It isn't a summer resort place at all. There will be absolutely nothing to do except eat, sleep, and grow fat."
Susan laughed as she glanced at her chum's slender figure. Penny was too active and athletic ever to be plump. She had sparkling blue eyes, golden hair, and a natural smile. It was very easy for her to make friends.
"I haven't finished my packing yet," said Penny. "I'll have to get back home or I'll keep Dad waiting."
"I'm terribly sorry to see you go," Susan told her. "Don't forget to send me a postcard now and then."