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Patrolman Willis searched painstakingly. He found a planet which was a mere frozen lump of matter in vastness. It was white from a layer of frozen gases piled upon its more solid core. He made observations.

“I can find it again, sir, to meet the Aldeb. Orders, sir?”

“Orders?” demanded Sergeant Madden. “What? Oh. Head in toward the sun. The Huks’ll be on Planet Three or Four, most likely. And that’s where they’ll have the Cerberus.”

The squad ship continued sunward while Patrolman Willis continued his observations. A star-picture along the ecliptic. An hour’s run on interplanetary drive–no overdrive field in use. Another picture. The two prints had only to be compared with a blinker for planets to stick out like sore thumbs, as contrasted with stars that showed no parallax. Sirene I–the innermost planet–was plainly close to a transit. II was away on the far side of its orbit. III was also on the far side. IV was in quadrature. There was the usual gap where V should have been. VI–it didn’t matter. They’d passed VIII a little while since, a ball of stone with a frigid gas-ice covering.

Patrolman Willis worked painstakingly with amplifiers on what oddments could be picked up in space.

“It’s Four, sir,” he reported unnecessarily, because the sergeant had watched as he worked. “They’ve got detectors out. I could just barely pick up the pulses. But by the time they’ve been reflected back they’ll be away below thermal noise-volume. I don’t think even multiples could pick ’em out. I’m saying, sir, that I don’t think they can detect us at this distance.”

Sergeant Madden grunted.

“D’you think we came this far not to be noticed?” he asked. But he was not peevish. Rather, he seemed more thoroughly awake than he’d been since the squad ship left the Precinct substation back on Varenga IV. He rubbed his hands a little and stood up. “Hold it a minute, Willis.”

He went back to the auxiliary-equipment locker. He returned to his seat beside Patrolman Willis. He opened the breech of the ejector-tube beside his chair.

“You’ve had street-fighting training,” he said almost affably, “at the Police Academy. And siege-of-criminals courses too, eh?” He did not wait for an answer. “It’s historic,” he observed, “that since time began cops’ve been stickin’ out hats for crooks to shoot at, and that crooks’ve been shooting, thinking there were heads in ’em.”

He put a small object in the ejector tube, poked it to proper seating, and settled himself comfortably, again.

“Can you make it to about a quarter-million miles of Four,” he asked cheerfully, “in one hop?”

Patrolman Willis set up the hop-timer. Sergeant Madden was pleased that he aimed the squad ship not exactly at the minute disk which was Planet IV of this system. It was prudence against the possibility of an error in the reading of distance.

“Ever use a marker, Willis?”

Patrolman Willis said: “No, sir.”

Before he’d finished saying it the squad ship had hopped into overdrive and out again.

* * * * *

Sergeant Madden approved of the job. His son Timmy couldn’t have done better. Here was Planet IV before them, a little off to one side, as was proper. They had run no risk of hitting in overdrive.

The distance was just about a quarter-million miles, if Krishnamurti’s Law predicting the size and distance of planets in a sol-type system was reliable. The world was green and had icecaps. There should always be, in a system of this kind, at least one oxygen-planet with a nearly-terran-normal range of temperature. That usually meant green plants and an ocean or two. There wasn’t quite as much sea as usual, on this planet, and therefore there were some extensive yellow areas that must be desert. But it was a good, habitable world. Anybody whose home it was would defend it fiercely.