"You know who I am." His voice, raised to carry through the messroom, sounded tinny and high-pitched. He had been told that the gas mixtures in the station would do that, but he hadn't noticed when he spoke in normal tones.

"What the hell are you doing here?" a man demanded. He came across the room to Aeneas: a tall man, sandy-haired and square-jawed, his muscles hard. He had the confidence of a man long in space, and more; a man who made his own destiny and controlled the destinies of others. It was a confidence that Aeneas recognized easily…

"Hello, David," Aeneas said quietly.

"Eh?" Penrose said. "That's Martin Holloway."

"His name is David Hindler," Aeneas said. "He is, or was until very recently, an agent of the CIA."

Holloway- Hindler smiled with half his face. "And Aeneas MacKenzie is, or was until recently, political and legal advisor to the President of the United States."

"I work for Miss Hansen now," Aeneas said. The room was still; everyone was listening,

Holloway shrugged. "You betrayed Greg after damn near twenty years with him-how long before you double-cross Hansen, Aeneas? Just what the hell are you doing here, anyway?"

"I have come to try a case of murder," Aeneas said.

Holloway looked up in surprise. "By what authority?"

"My own. I am commander of this station." He looked to Eliot.

"That's what Miss Hansen says," Eliot announced. "She appointed MacKenzie in Captain Shorey's place."

"That's stupid," Holloway said. "You've got no authority. Companies don't make law and courts and appoint judges-"

"Then I appoint myself. Sit down, David. You are charged with the willful murder of Captain Amos Shorey. How do you plead?"

"Go to hell! You've got no authority over me." He looked around for support.

"But I do." The quiet voice demanded attention. Holloway looked back to Aeneas and saw that he had taken an odd-looking gun from inside his coveralls. Holloway started to reach for his own "Don't!"

The command halted his move for a second.

"The first dart contains a tranquilizer," Aeneas said. "The rest have cyanide. And I've practiced in this gravity. Keep your hands where I can see them, David. And please sit down."

"I'll sit." Holloway eyed the gun warily. "But you can't make me accept the authority of your court. You're no better than any other gunman-don't the rest of you see that? You let him do this to me, and which one of you's next? Do something!"

There were murmurs of assent, and several crewmen stood menacingly.

"Wait," Aeneas commanded. The helium in the atmosphere in the station made his voice shrill, but the timbre of command remained. "You may as well hear me out. How many of you hope to go with Valkyrie ? Or to the Moon colony?"

About half. Kittridge Penrose was among them.

"And why?" Aeneas asked.

"Because we've had enough of Earth and bureaucrats and laws and regulations," Penrose said. "We can't breathe down there! We've had it with the Martin Holloways -and people like you, MacKenzie!"

"Yet you cannot live without law," Aeneas said. "There is no civilization without justice."

"Law? Justice?" Penrose was contemptuous. "Rules, regulations, taxes, traps for people minding their own business."

"Those are perversions of law." Aeneas deliberately kept his voice low so that they had to strain to listen. "There can be no civilization without law and no civilized men without justice. Earth's law cannot govern here. It cannot even govern Earth. But that does not mean you can dispense with law altogether."

"So you'll give us laws?" Holloway said contemptuously.

"No. But this satellite is not independent of Earth. It is not sovereign. It must have government. Miss Hansen has given me that task."

"Are you going to put up with this?" Holloway demanded, "You don't know this son of a bitch. Law! He's a goddam computer. He'll have you marching around under regulations like you've never seen." He turned to the crew. "Help me!"

"Help him and you give Heimdall to the Equity Trust. Or to Greg Tolland," Aeneas said. "I do not think you will care for either master. Even those who are here for short tours only-and those who want a new life in space will be finished."

There was a buzz of conversation. "Hansen's been decent enough."

"Hell, he's got the gun…"

"I don't owe Holloway nothing."

"Let Penrose and Eliot decide, that's their job, I mind my own business…"

Aeneas raised his voice to cut through the chatter. "The prohibition against murder is as old as man. Are any safe here? Who had more friends than Captain Shorey? Who will avenge you if you are wronged?"

"What do you intend to do with Holloway?" one engineer demanded.

"I intend to try him for murder."

"Some trial!" Holloway shouted. "A kangaroo court."

"Yes. You prefer a court which you know will never convict you. I think, David, you have forgotten what a trial is for. It is not a show, but a means of discovering what has happened. I think we can do that here. The crew will be the jury."

"What happens if we say guilty?" Penrose demanded.

"Sentence is the responsibility of the judge. Martin Holloway, as you are known here, how do you plead?"

"You goddam fools!" Holloway shouted. "You're really going to let him do this, aren't you? By God, you touch me and the Agency'll track every one of you down. You've got to go back to Earth sometime-"

"Not everyone," Aeneas said quietly.

"They've got families," Holloway said grimly.

Aeneas shook his head sadly. "This is beneath you, David. And I warn you, you are not helping your case. I advise you to say nothing else." Still carefully holding the pistol ready, Aeneas took a seat across the table from Holloway. "I wish you had not threatened the crew."

Because, Aeneas thought, you force me to act alone. But he had always known it would come to this. He had become-what? "Your plea is not necessary," Aeneas said. "I call the first witness. Miss Raisters , your oath. Do you swear- "

"His people will kill me," Ann said. "He wasn't alone. There are more of them here-"

"You told me Amos Shorey was your friend. And there will be justice here, and on Valkyrie."

Her lips tightened. She took a deep breath and began to tell her story.

In two hours they had heard it all: Holloway's threats and promises to various crewmen; sabotage plans, promises of money and position when Equity took control of Heimdall. There were five witnesses to those acts; and Ann Raisters and another woman had seen Holloway enter the laboratory. They saw Captain Shorey go in after him; and Shorey never returned.

The station physician told them that Shorey died of explosive decompression, but that he had been drugged first. "I don't know the drug," he told them. "Not precisely. One of the curare derivatives, I'd think. Certainly something at least that powerful, to leave a man's muscles relaxed as he explodes. Not even unconsciousness could have done that."

When it was finished, Aeneas spoke to Holloway. "You may present your defense."

"I don't have to make any defense!"

"I advise you to do so. At the moment the evidence is much against you."

"You used to be my friend," David said.

"Make your defense," Aeneas replied. His voice was even, and no one could tell if that had cost him much or little.

"Crap. I didn't kill Shorey!"

"How did he die?"

"It was an accident. He-"

"Yes?

Holloway thought for a moment. There was no possible explanation. Drugged, Shorey could not have operated the airlock; yet he had certainly been outside it. "You've got no authority here. I demand you send me down!"

"No. Have you completed your defense?"