from his pocket a black object like an automatic pencil. Hunting over the rough plank wall, he found a small hole and inserted the pointed end of the pseudo-pencil, pressing on the other end. For an instant, nothing happened. Then a ten-foot-square section of the wall receded two feet and slid noiselessly to one side. The section which had slid inward had been built of three-inch steel, masked by a thin covering of boards; the wall around it was two-foot concrete, similarly camouflaged. He stepped quickly inside.
Fumbling at the right side of the opening, he found a switch and flicked it. Instantly, the massive steel plate slid back into place with a soft, oily click. As it did, lights came on within the hidden room, disclosing a great semiglobe of some fine metallic mesh, thirty feet in diameter and fifteen in height. There was a sliding door at one side of this; the man called Richard Lee opened and entered through it, closing it behind him. Then he turned to the center of the hollow dome, where an armchair was placed in front of a small desk below a large instrument panel. The gauges and dials on the panel, and the levers and switches and buttons on the desk control board, were all lettered and numbered with characters not of the Roman alphabet or the Arabic notation, and, within instant reach of the occupant of the chair, a pistollike weapon lay on the desk. It had a conventional index-finger trigger and a hand-fit grip, but, instead of a tubular barrel, two slender parallel metal rods extended about four inches forward of the receiver, joined together at what would correspond to the muzzle by a streamlined knob of some light blue ceramic or plastic substance.
The man with the handsome immobile face deposited his rifle and musette on the floor beside the chair and sat down. First, he picked up the pistollike weapon and checked it, and then he examined the many instruments on the panel in front of him. Finally, he flicked a switch on the control board.
At once, a small humming began, from some point overhead. It wavered and shrilled and mounted in intensity, and then fell to a steady monotone. The dome about him flickered with a queer, cold iridescence, and slowly vanished. The hidden room vanished, and he was looking into the shadowy interior of a deserted barn. The barn vanished; blue sky appeared above, streaked with wisps of high cirrus cloud. The autumn landscape flickered unreally. Buildings appeared and vanished, and other buildings came and went in a twinkling. All around him, half-seen shapes moved briefly and disappeared.
Once, the figure of a man appeared, inside the circle of the dome. He had an angry, brutal face, and he wore a black tunic piped with silver, and black breeches, and polished black boots, and there was an insignia, composed of a cross and thunderbolt, on his cap. He held an automatic pistol in his hand.
Instantly, the man at the desk snatched up his own weapon and thumbed off the safety, but before he could lift and aim it, the intruder stumbled and passed outside the force-field which surrounded the chair and instruments.
For a while, there were fires raging outside, and for a while, the man at the desk was surrounded by a great hall, with a high, vaulted ceiling, through which figures flitted and vanished. For a while, there were vistas of deep forests, always set in the same background of mountains and always under the same blue cirrus-laced sky. There was an interval of flickering blue-white light, of unbearable intensity. Then the man at the desk was surrounded by the interior of vast industrial works. The moving figures around him slowed, and became more distinct. For an instant, the man in the chair grinned as he found himself looking into a big washroom, where a tall blond girl was taking a shower bath, and a pert little redhead was vigorously drying herself with a towel. The dome grew visible, coruscating with many-colored lights and then the humming died and the dome became a cold and inert mesh of fine white metal. A green light above flashed on and off slowly.
He stabbed a button and flipped a switch, then got to his feet, picking up his rifle and musette and fumbling under his shirt for a small mesh bag, from which he took an inch-wide disk of blue plastic. Unlocking a container on the instrument panel, he removed a small roll of solidograph-film, which he stowed in his bag. Then he slid open the door and emerged into his own dimension of space-time.
Outside was a wide hallway, with a pale green floor, paler green walls, and a ceiling of greenish off-white. A big hole had been cut to accommodate the dome, and across the hallway a desk had been set up, and at it sat a clerk in a pale blue tunic, who was just taking the audio-plugs of a music-box out of his ears. A couple of policemen in green uniforms, with ultrasonic paralyzers dangling by thongs from their left wrists and bolstered sigma-ray needlers like the one on the desk inside the dome, were kidding with some girls in vivid orange and scarlet and green smocks. One of these, in bright green, was a duplicate of the one he had seen rubbing herself down with a towel.
"Here comes your boss-man," one of the girls told the cops, as he approached. They both turned and saluted casually. The man who had lately been using the name of Richard Lee responded to their greeting and went to the desk. The policemen grasped their paralyzers, drew their needlers, and hurried into the dome.
Taking the disk of blue plastic from his packet, he handed it to the clerk at the desk, who dropped it into a slot in the voder in front of him. Instantly, a mechanical voice responded:
"Verkan Vall, blue-seal noble, hereditary Mavrad of Nerros. Special Chief's Assistant, Paratime Police, special assignment. Subject to no orders below those of Tortha Karf, Chief of Paratime Police. To be given all courtesies and co-operation within the Paratime Transposition Code and the Police Powers Code. Further particulars?"
The clerk pressed the "no"-button. The blue sigil fell out the release-slot and was handed back to its bearer, who was drawing up his left sleeve.
"You'll want to be sure I'm your Verkan Vall, I suppose?" he said, extending his arm.
"Yes, quite, sir."
The clerk touched his arm with a small instrument which swabbed it with antiseptic, drew a minute blood-sample, and medicated the needle prick, all in one almost painless operation. He put the blood-drop on a slide and inserted it at one side of a comparison microscope, nodding. It showed the same distinctive permanent colloid pattern as the sample he had ready for comparison; the colloid pattern given in infancy by injection to the man in front of him, to set him apart from all the myriad other Verkan Valls on every other probability-line of paratime.
"Right, sir," the clerk nodded.
The two policemen came out of the dome, their needlers holstered and their vigilance relaxed. They were lighting cigarettes as they emerged.
"It's all right, sir," one of them said. "You didn't bring anything in with you, this trip."
The other cop chuckled. "Remember that Fifth Level wild-man who came in on the freight conveyor at Jandar, last month?" he asked.
If he was hoping that some of the girls would want to know, what wild-man, it was a vain hope. With a blue-seal mavrad around, what chance did a couple of ordinary coppers have? The girls were already converging on Verkan Vall.
"When are you going to get that monstrosity out of our restroom," the little redhead in green coveralls was demanding. "If it wasn't for that thing, I'd be taking a shower, right now."
"You were just finishing one, about fifty paraseconds off, when I came through," Verkan Vall told her.
The girl looked at him in obviously feigned indignation.
"Why, you—You parapeeper!"
Verkan Vall chuckled and turned to the clerk. "I want a strato-rocket and pilot, for Dhergabar, right away. Call Dhergabar Paratime Police Field and give them my ETA; have an air-taxi meet me, and have the chief notified that I'm coming in. Extraordinary report. Keep a guard over the conveyor; I think I'm going to need it, again, soon." He turned to the little redhead. "Want to show me the way out of here, to the rocket field?" he asked.
Outside, on the open landing field, Verkan Vall glanced up at the sky, then looked at his watch. It had been twenty minutes since he had backed the jeep into the barn, on that distant other time-line; the same delicate lines of white cirrus were etched across the blue above. The constancy of the weather, even across two hundred thousand parayears of perpendicular time, never failed to impress him. The long curve of the mountains was the same, and they were mottled