"I hope so," Barrent said. "Let's suppose I reach Earth safely and get the information you want. How do I send it back?"

"You send it back on the next prison ship," Eylan said. "We plan to capture that one."

Barrent rubbed his forehead wearily. "What makes you think that any of this — my expedition or your uprising — can succeed against an organization as powerful as Earth?"

"We have to take the chance," Eylan said. "Take it or go down in a bloody shambles with the rest of Omega. I agree that the odds are weighted against us. But our choice is either to make the attempt or to die without making any attempt at all."

Moera nodded at this. "Also, the situation has other possibilities. The government of Earth is obviously repressive. That argues the existence of underground resistance groups on Earth itself. You may be able to contact those groups. A revolt both here and on Earth would give the government something to think about."

"Maybe," Barrent said.

"We have to hope for the best," Eylan said. "Are you with us?"

"Certainly," Barrent said. "I'd rather die on Earth than on Omega."

"The prison ship lands in six days," Eylan said. "During that time, we will give you the information we have about Earth. Part of it is memory reconstruction, part has been skrenned by the mutants, and the rest is logical constructs. It's all we have, and I think it gives a reasonably accurate picture of current conditions on Earth."

"How soon do we start?" Barrent asked.

"Right now," Eylan said.

Barrent received a general briefing on the physical make-up of Earth, its climate and major population centers. Then he was sent to Colonel Bray, formerly of the Earth Deep Space Establishment. Bray talked to him about the probable military strength of Earth as represented by the number of guardships around Omega and their apparent level of scientific development. He gave estimates of the size of the Earth forces, their probable divisions into land, sea, and space groups, their assumed level of efficiency. An aide, Captain Carell, lectured on special weapons, their probable types and ranges, their availability to the general Earth population. Another aide, Lieutenant Daoud, talked about detection devices, their probable locations, and how to avoid them.

Then Barrent was turned back to Eylan for political indoctrination. From him, Barrent learned that Earth was believed to be a dictatorship. He learned the methods of a dictatorship, its peculiar strengths and weaknesses, the role of the secret police, the use of terror, the problem of informers.

When Eylan was finished with him, Barrent went to a small, beady-eyed man who lectured on Earth's memory-destroying system. Using the premise that memory-destruction was regularly employed to render opposition ineffective, the man went on to construct the probable nature of an underground movement on Earth given those circumstances, and how Barrent might contact them, and what the underground's capabilities might be.

Finally he was given the full details of Group Two's plan for getting him on board the ship.

When Landing Day came, Barrent felt a definite sense of relief. He was heartily sick of day and night cramming. Any sort of action would seem an improvement.

Barrent watched the huge prison ship maneuver into position and sink noiselessly to the ground. It gleamed dully in the afternoon sun, tangible proof of Earth's long reach and powerful grasp. A hatch opened, and a landing stage was let down. The prisoners, flanked by guards, marched down and assembled in the square.

As usual, most of the population of Tetrahyde had gathered to watch and cheer the disembarkation ceremony. Barrent moved through the crowd and stationed himself behind the ranks of prisoners and guards. He touched his pocket to make sure the needlebeam was still there. It had been made for him by Group Two fabricators, completely of plastic to escape any metals detector. The rest of his pockets were stuffed with equipment. He hoped he wouldn't have to use any of it.

The loudspeaker voice began to read off the prisoners' numbers, as it had when Barrent had disembarked. He listened, knees slightly bent, waiting for the beginning of the diversion.

The loudspeaker voice was coming to the end of the prisoner list. There were only ten left. Barrent edged forward. The voice droned on. Four prisoners left, three….

As the number of the last prisoner was announced, the diversion began. A black cloud of smoke darkened the pale sky, and Barrent knew that the Group had set fire to the empty barracks in Square A-2. He waited.

Then it came. There was a stupendous explosion, blasting through two rows of empty buildings. The shock wave was staggering. Even before debris began to fall, Barrent was running toward the ship.

The second and third explosions went off as he came into the ship's shadow. Quickly he stripped off his Omegan outer garments. Under them, he wore a facsimile of guard's uniform. Now he ran toward the landing stage.

The loudspeaker voice was calling loudly for order. The guards were still bewildered.

The fourth explosion threw Barrent to the ground. He got to his feet instantly and sprinted up the landing stage. He was inside the ship. Outside, he could hear the guard captain shouting orders. The guards were beginning to form into ranks, their weapons ready to use against the restive crowd. They were retreating to the ship in good order.

Barrent had no more time to listen. He was standing in a long, narrow corridor. He turned to the right and raced toward the bow of the ship. Far behind him, he could hear the heavy marching tread of the guards.

Now, he thought, the information he had been given about the ship had better be right, or the expedition was finished before it began.

He sprinted past rows of empty cells, and came to a door marked GUARD ASSEMBLY ROOM. A lighted green bulb above the door showed that the air system was on. He went by it, and came to another door. Barrent tried it now, and found it unlocked. Within was a room stacked high with spare engine parts. He entered and closed the door.

The guards marched down the corridor. Barrent could hear them talking as they entered the assembly room.

"What do you think started those explosions?"

"Who knows? Those prisoners are crazy, anyhow."

"They'd blow up the whole planet, if they could."

"Good riddance."

"Well, it didn't cause any damage. There was an explosion like that about fifteen years ago. Remember?"

"I wasn't here then."

"Well, it was worse than this. Two guards were killed, and maybe a hundred prisoners."

"What started it?"

"Don't know. These Omegans just enjoy blowing things up."

"Next thing you know, they'll be trying to blow us up."

"Not a chance. Not with the guardships up there."

"You think so? Well, I'll be glad to get back to the checkpoint."

"You said it. Be good to get off this ship and live a little."

"It isn't a bad life at the checkpoint, but I'd rather go back to Earth."

"Well, you can't have everything."

The last of the guards entered the assembly room and dogged the door shut. Barrent waited. After a while, he felt the ship vibrate. It was beginning its departure.

He had learned some valuable information. Apparently all or most of the guards got off at the checkpoint. Did that mean that another detachment of guards got on? Probably. And a checkpoint implied that the ship was searched for escaped prisoners. It was probably only a perfunctory search, since no prisoner had escaped in the history of Omega. Still, he would have to figure out a way of avoiding it.

But he would face that when the time came. Now he felt the vibration cease, and he knew that the ship had left the surface of Omega. He was aboard, unobserved, and the ship was on its way to Earth. So far, everything had gone according to plan.