His eyes flickered aloft. A shooting star streaked across one-third of the sky leaving a trail of light behind it. Then it went out.

"You'll even be tempted," said Davis, "to include something like that in your guesses! And then you'll try to come up with a total for the lot. Then you'll be as troubled as I am."

He paused a moment.

"You said you wanted to be put ashore as soon as the gadget you made today was tested. I hope you've changed your mind, or will. That tape-recording may mean something to somebody. We wouldn't have heard that very singular noise but for you."

"I withdraw the business of going ashore," said Terry uncomfortably. "I'm going to ask another question. What are those little spheres that I saw in the photographs on the cabin table? Were they found fastened to the fish?"

"So I'm told," said Davis. "They are made of plastic. One was on a fish caught by a chief petty officer of the United States Navy. Four have been found on fish brought into the market by La Rubia. They could conceivably be a joke, but it's very elaborate! Somebody tried to cut one open and it burst to hell-and-gone. Terrific pressure inside. The metal parts inside were iridium. The others haven't been cut open. They're—" Davis' tone was dry. "They're being studied."

A figure came out of the forecastle and walked aft. It was Nick. He stopped to say, "I called Manila and got a loran fix on us. We're right at the place La Rubia heads for every time she sneaks away from the rest of the fishing fleet. It seems that she hauls her nets yonder."

He nodded toward the circular area of luminosity on the sea. "It looks smaller than when I went below deck."

Davis stared. He seemed to stiffen.

"It does. We'll make sure."