re Chet was supporting the head of a slim girl whose
eyes opened to look about, to glance from Chet to Harkness and back to
Chet who was holding her.

"You saved me," she breathed, "from them!" She raised one hand weakly
to cover her eyes at memory of those writhing shapes, then let it fall
as other memories crowded in.

"The patrol-ships!" she exclaimed breathlessly. "You must...." Her
voice trailed off into silence.

She was able to stand, and with Chet's help she came slowly to her
feet as Harkness reached her. His voice was harsh and scornful; all
elation had left him. He forced himself to hold his unsmiling gaze
steadily upon the soft brown eyes that turned to his.

"Yes," he said; "we must 'surrender'--that was the word you wanted. We
must surrender!... Well, Mam'selle Diane, we're not in a surrendering
mood to-day. We've got away; made our escape!"

He laughed loudly and contemptuously, though he winced at the look of
hurt that opened the brown eyes wide.

"You brought the patrol," he went on; "you learned where we were--"

"Herr Schwartzmann did," she interrupted in a quiet voice. "He located
you; your signals were picked up.... They left two hours before I
did," she added enigmatically. "I had to fly high, above the R. A. for
greater speed."

Walt Harkness was bewildered. What did this mean? He tried to preserve
the pose of hard indifference that was becoming increasingly
difficult.

"More generosity?" he inquired. "You had to see the end of the
hunt--be in at the death?"

"In at the death!" she echoed, and laughed in a tone that trembled and
broke. "I nearly was, truly. But, no, my dear Monsieur Harkness:
incredible as it seems, in view of your unfriendly reception, I came
to warn you!... But, enough of that. Tell me--you see how interested
I am in your plans?--what did you say of the Dark Moon?"

* * * * *

Walter Harkness tried to rearrange his jumbled thoughts. She had come
to warn them. Was this true? Or was this girl, who laughed so lightly,
playing with him?

"Yes," he said dully, "we were bound for the Dark Moon. The Patrol
couldn't stop us, nor the beasts that have paralyzed the flying
service of the earth; but you have done it. We will turn back at once,
and return you safely--"

He was again at the controls, one hand extended for the metal ball,
when her slim hand closed upon his wrist.

"I know Herr Schwartzmann's plans," she said quietly. "He would