"Unless Jack was quick enough to grasp the situation."

Stone slapped his leg.

"I see what you mean," he said. "Your friend Jack could call the ranch, too, and interfere so much that Morales' message would be all twisted up."

"That's it," said Frank. "And when it comes to thinking quickly and acting at once, you can count on Jack. Just the same," he added, "he can't keep that up forever, and when he lands—"

"Which he'll have to do shortly," interrupted Stone, "because the ranch is only fifty miles from here."

"Why, then," continued Frank, "these fellows can get their warning to the ranch and the boys will be captured, or at least their plan to rescue Mr. Hampton will be spoiled. No, sir, we'll have to wreck the radio plant here to give them a chance. If Jack has been able so far to interfere with the warning, and we put this plant out of commission now, they may be able to carry out their rescue after all. Let's see. How will we go about it?"

Both had been so engrossed they had failed to notice a dark form which, after creeping noiselessly up the slope, had started edging across the little plateau. Now this form suddenly straightened up and leaped forward. Frank cried out in alarm and jumped sideways, just as a spurt of flame split the darkness. The bullet sped by, leaving him unharmed. Stone, who was closer and stood with back turned, whirled about. The charging form cannoned into him, and he went down.

CHAPTER XXIV

FRANK SAVES THE DAY

Frank's first thought was to go to the assistance of Roy Stone. The latter and his opponent—in the darkness Frank could not distinguish whether it was Morales or Von Arnheim—were locked with their arms about each other and rolling on the ground. His second thought was as to the whereabouts of the other man.