“Oh, I do!” laughed Penny. “A big tree!”
“That’s right,” agreed Jerry. “And at the hour of six?”
“Why, a signboard!” chuckled Penny. “At the hour of seven there’s a big sand dune!”
“If you picture things in your mind as if they’re on the face of a clock it’s much easier to remember and keep them in proper proportion. Now, using that same system can you recall anything more about the place where Mrs. Deline buried the package?”
“Not very much,” Penny admitted. “I didn’t take notations at the time.”
“Speaking of signboards, I remember one,” Louise said thoughtfully. “It was a long distance back from the beach, slightly to the right. A cigarette advertisement.”
“That’s right!” agreed Penny.
“Perhaps that will help some,” Jerry said. “We’ll have to find the package.”
“Then you believe Mrs. Deline is an Enemy Agent?” Penny asked eagerly.
“I’ve thought so for quite a while now,” Jerry admitted. “I didn’t say it for fear of building up your hopes. Anyhow, we’ve got to work quietly in this business.”