"You talked to Stutsman today," he said. "If I were you, I wouldn't let Stutsman do anything rash. Russ Page and I might have to fight back."

Mockery tinged Chambers' voice. "Am I to take this as a declaration of war, Mr. Manning?"

"Take it any way you like," Greg said. "I came here to give you a proposition, and you tell me you're going to smash me. All I have to say to you, Chambers, is this—when you get ready to smash me, you'd better have a deep, dark hole all picked out for yourself to hide in. Because I'll hand you back just double anything you hand out."


CHAPTER TEN

"One of us will have to watch all the time," Greg told Russ. "We can't take any chances. Stutsman will try to reach us sooner or later and we have to be ready for him."

He glanced at the new radar screen they had set up that morning beside the bank of other controls. Any ship coming within a hundred miles of the laboratory would be detected instantly and pinpointed.

The board flashed now. In the screen they saw a huge passenger ship spearing down toward the airport south of them.

"With the port that close," said Russ, "we'll get a lot of signals."