---

The tall man loitered a moment before a garish window display, his eyes impassive in his space-burned face, as the Lillis patrolman passed. Then he turned, burying his long chin in the folds of his sand cape, and took up the pursuit of the dark figure ahead once more.

Above, the city's multicolored lights were reflected from the translucent Dome—a distant, subtly distorted Lillis, through which the stars shone dimly.

Getting through that dome had been his first urgent problem, but now he had another, and a more pressing one. It had been simple enough to pass himself off as an itinerant prospector and gain entrance to the city, after his ship had crashed in the Mare Cimmerium. But the rest would not be so simple. He had to acquire a spaceman's identity card, and he had to do it fast. It was only a matter of time until the Triplanet Patrol gave up the misleading trail he had made into the hill country, and concluded that he must have reached Lillis. After that, his only safety lay in shipping out on a freighter as soon as possible. He had to get off Mars, because his trail was warm, and the Patrol thorough.

They knew, of course, that he was an outlaw—the very fact of the crashed, illegally-armed ship would have told them that. But they didn't know that he was Syme Rector, the most-wanted and most-feared raider in the System. In that was his only advantage.

He walked a little faster, as his quarry turned up a side street and then boarded a moving ramp to an upper level. He watched until the short, wide-shouldered figure in spaceman's harness disappeared over the top of the ramp, and then followed.

The man was waiting for him at the mouth of the ascending tunnel.

Syme looked at him casually, without a flicker of expression, and started to walk on, but the other stepped into his path. He was quite young, Syme saw, with a fighter's shoulders under the white leather, and a hard, determined thrust to his firm jaw.

"All right," the boy said quietly. "What is it?"

"I don't understand," Syme said.

"The game, the angle. You've been following me. Do you want trouble?"

"Why, no," Syme told him bewilderedly. "I haven't been following you. I—"

The boy knuckled his chin reflectively. "You could be lying," he said finally. "But maybe I've made a mistake." Then—"Okay, citizen, you can clear—but don't let me catch you on my tail again."

Syme murmured something and turned away, feeling the spaceman's eyes on the small of his back until he turned the corner. At the next street he took a ramp up, crossed over and came down on the other side a block away. He waited until he saw the boy's broad figure pass the intersection, and then followed again more cautiously.

It was risky, but there was no other way. The signatures, the data, even the photograph on the card could be forged once Syme got his hands on it, but the identity card itself—that oblong of dark diamondite, glowing with the tiny fires of radioactivity—that could not be imitated, and the only way to get it was to kill.

Up ahead was the Founders' Tower, the tallest building in Lillis. The boy strode into the entrance lobby, bought a ticket for the observation platform, and took the elevator. As soon as his car was out of sight in the transparent tube, Syme followed. He put a half-credit slug into the machine, took the punctured slip of plastic that came out. The ticket went into a scanning slot in the wall of the car, and the elevator whisked him up.

---

The tower was high, more than a hundred meters above the highest level of the city, and the curved dome that kept air in Lillis was close overhead. Syme looked up, after his first appraising glance about the platform, and saw the bright-blue pinpoint of Earth. The sight stirred a touch of nostalgia in him, as it always did, but he put it aside.

The boy was hunched over the circular balustrade a little distance away. Except for him, the platform was empty. Syme loosened his slim, deadly energy pistol in its holster and padded catlike toward the silent figure.

It was over in a minute. The boy whirled as he came up, warned by some slight sound, or by the breath of Syme's passage in the still air. He opened his mouth to shout, and brought up his arm in a swift, instinctive gesture. But the blow never landed. Syme's pistol spat its silent white pencil of flame, and the boy crumpled to the floor with a minute, charred hole in the white leather over his chest.

---

---

Syme stooped over him swiftly, found a thick wallet and thrust it into his pocket without a second glance. Then he raised the body in his arms and thrust it over the parapet.

It fell, and in the same instant Syme felt a violent tug at his wrist. Before he could move to stop himself, he was over the edge. Too late, he realized what had happened—one of the hooks on the dead spaceman's harness had caught the heavy wristband of his chronometer. He was falling, linked to the body of his victim!

Hardly knowing what he did, he lashed out wildly with his other arm, felt his fingertips catch and bite into the edge of the balustrade. His body hit the wall of the tower with a thump, and, a second later, the corpse below him hit the wall. Then they both hung there, swaying a little and Syme's fingers slipped a little with each motion.

Gritting his teeth, he brought the magnificent muscles of his arm into play, raising the forearm against the dead weight of the dangling body. Fraction by slow fraction of an inch, it came up. Syme could feel the sweat pouring from his brow, running saltily into his eyes. His arms felt as if they were being torn from their sockets. Then the hook slipped free, and the tearing, unbearable weight vanished.

The reaction swung Syme against the building again, and he almost lost his slippery hold on the balustrade. After a moment he heard the spaceman's body strike with a squashy thud, somewhere below.

He swung up his other arm, got a better grip on the balustrade. He tried cautiously to get a leg up, but the motion loosened his hold on the smooth surface again. He relaxed, thinking furiously. He could hold on for another minute at most; then it was the final blast-off.

He heard running footsteps, and then a pale face peered over the ledge at him. He realized suddenly that the whole incident could have taken only a few seconds. He croaked, "Get me up."

Wordlessly, the man clasped thin fingers around his wrist. The other pulled, with much puffing and panting, and with his help Syme managed to get a leg over the edge and hoist his trembling body to safety.

"Are you all right?"

---

Syme looked at the man, nursing the tortured muscles of his arms. His rescuer was tall and thin, of indeterminate age. He had light, sandy hair, a sharp nose, and—oddly conflicting—pale, serious eyes and a humorous wide mouth. He was still panting.