“I’m going to be a nurse when I grow up. Climbing trees won’t help me at that.”

“Then wait here until I get back,” Penny said, starting across the clearing.

As she had known, her chum could not bear to be left alone in the dark woods. Louise hastened after her and together they crept to the base of the scraggly old maple.

The branches were so low that Penny pulled herself into them without difficulty. She then helped Louise scramble up beside her. They clung together a moment, listening to make certain that no sound had betrayed them.

“So far, so good,” Penny whispered jubilantly. “Now to get onto the roof. And it does have a skylight!”

“We’ll probably tumble through it,” Louise muttered.

A dim light, which came from a candle, burned inside the shack. Nevertheless, from their perch on the overhanging limb, the girls were unable to see what was happening below. Penny decided to lower herself to the roof.

“Put on your velvet shoes,” she warned as she swung lightly down from the lower branch. “The slightest noise and we’re finished.”

Dropping on the flat roof, she waited a moment, listening. Satisfied that the men inside the shack had not heard her, she motioned for Louise to follow. Her chum however, held back, shaking her head vigorously.

Abandoning the attempt to get Louise onto the roof, Penny crept toward the skylight. Lying full length, she pressed her face against the thick glass.