Darkness was all around her, but overhead the stars shone brightly, and the moon came from behind a cloud to light her way. Strange, lonely, mysterious, it seemed to her, as she flew through the night, but nevertheless thrilling. Gradually a sense of peace settled over her, as if a Divine Providence was surely guiding her, and she experienced the firm conviction that everything was right, that she was going to be successful in her mission to save her father's life.

For the first time she realized how much her confidence had to do with Ted Mackay. Because he had repaired and inspected the motor, she felt certain there would be no accident, and a successful flight was a good omen for the operation. Moreover, she had great faith in Dr. Lineaweaver. If he would only promise to come!

The hours passed, the moon set, the night grew darker. But the solitary girl flew on, swift and straight to her course, steadfast in her undertaking. About two o'clock she arrived at the little seaport, found a landing place back of the one big hotel, and went inside.

Fortunately a night clerk was on duty, and he rose immediately to greet her. The flyer's costume identified her so that he had no need to ask what a girl of her age was doing alone at this early hour of the morning.

"Can you tell me where Dr. Lineaweaver, the surgeon, can be located?" she inquired. "I want him immediately—it is a question of my father's life."

Her voice was steady now; there was no danger of tears. She seemed almost mature as she spoke the words.

"Yes," replied the clerk. "He is staying at Dr. Grayson's bungalow—a couple of blocks away. They come over here for their meals."

"Could you get him on the telephone for me?"

"Certainly. I'll let you talk with him."

Although the clerk put in the call immediately, there was no answer for several minutes. A fishing trip had tired both doctors, and they were sleeping soundly. At last, however, there came a reply, and Linda took the telephone.