He put the little grids against his ears. I could hear the sharp intake of his breath. Then he seized me, pulled me down to the metal floor of the entryway.
“Back, Gregg! Get back!” I could barely hear his whisper. We crouched as far back into the doorway as we could get. I was armed. My official permit for the carrying of the pencil heat-ray allowed me to have it always with me. I drew it now. But there was nothing to shoot at. I felt Snap clamping the grids on my ears. And now I heard something! An intensification of the vague footsteps I had thought I heard before.
There was something following us! Something out in the corridor there now! A street light was nearby. The corridor was dim, but plainly visible; and to my sight it was empty. But there was something there. Something invisible! I could hear it moving. Creeping towards us. I pulled the grids off my ears.
Snap murmured, “You’ve got a local phone.”
“Yes! I’ll get them to give us the street glare!”
I pressed the danger signal, giving our location to the nearest operator. In a second or two we got the light. The street in all this neighborhood burst into a brilliant actinic glare. The thing menacing us was revealed! A figure in a black cloak, crouching thirty feet away across the corridor.
Snap was on his feet. His voice rang shrilly, “There it is! Give it a shot, Gregg!”
Snap was unarmed, but he flung his hands out menacingly. The figure, which may perhaps not have been aware of our city safeguard, was taken wholly by surprise. A human figure. Seven feet tall, at the least, and therefore, I judged, doubtless a Martian man. The black cloak covered his head. He took a step toward us, hesitated, and then turned in confusion.
Snap’s shrill voice was bringing help. The whine of a street guard’s alarm whistle nearby sounded. The figure was making off! My pencil-ray was in my hand and I pressed its switch. The tiny heat-ray stabbed through the glare, but I missed. The figure stumbled, but did not fall. I saw a bare gray arm come from the cloak, flung up to maintain its balance. Or perhaps my pencil-ray of heat had seared the arm. The gray-skinned arm of a Martian.
Snap was shouting, “Give him another!” But the figure passed beyond the actinic glare and vanished.
We were detained in the turmoil of the corridor for ten minutes or more with official explanations. Then a message from Halsey released us. The Martian who had been following us in his invisible cloak was never caught.
We escaped from the crowd at last and made our way back to the Planetara, where the passengers were already assembling for the outward Martian voyage.
CHAPTER II
I stood on the turret-balcony of the Planetara with Captain Carter and Dr. Frank, the ship surgeon, watching the arriving passengers. It was close to the zero hour: the level of the stage was a turmoil of confusion. The escalators, with the last of the freight aboard, were folded back. But the stage was jammed with the incoming passenger baggage: the interplanetary customs and tax officials with their X-ray and Zed-ray paraphernalia and the passengers themselves, lined up for the export inspection.
At this height, the city lights lay spread in a glare of blue and yellow beneath us. The individual local planes came dropping like birds to our stage. Thirty-eight passengers for this flight to Mars, but that accursed desire of every friend and relative to speed the departing voyager brought a hundred or more extra people to crowd our girders and bring added difficulty to everybody.
Carter was too absorbed in his duties to stay with us long. But here in the turret Dr. Frank and I found ourselves at the moment with nothing much to do but watch.
“Think we’ll get away on time, Gregg?”
“No,” I said. “And this of all voyages–”
I checked myself, with thumping heart. My thoughts were so full of what Halsey and Carter had told us that it was difficult to rein my tongue. Yet here in the turret, unguarded by insulation, I could say nothing. Nor would I have dared mention the Grantline Moon Expedition to Dr. Frank. I wondered what he knew of this affair. Perhaps as much as I–perhaps nothing.
He was a thin, dark, rather smallish man of fifty, this ship’s surgeon, trim in his blue and white uniform. I knew him well: we had made several flights together. An American–I fancy of Jewish ancestry. A likable man, and a skillful doctor and surgeon. He and I had always been good friends.
“Crowded,” he said. “Johnson says thirty-eight. I hope they’re experienced travelers. This pressure sickness is a rotten nuisance–keeps me dashing around all night assuring frightened women they’re not going to die. Last voyage, coming out of the Venus atmosphere–”
He plunged into a lugubrious account of his troubles with space-sick voyagers. But I was in no mood to listen. My gaze was down on the spider incline, up which, over the bend of the ship’s sleek, silvery body, the passengers and their friends were coming in little groups. The upper deck was already jammed with them.
The Planetara, as flyers go, was not a large vessel. Cylindrical of body, forty feet maximum beam, and two hundred and seventy-five feet in overall length. The passenger superstructure–no more than a hundred feet long–was set amidships. A narrow deck, metallic-enclosed, and with large bulls-eye windows, encircled the superstructure. Some of the cabins opened directly onto the deck. Others had doors to the interior corridors. There were half a dozen small but luxurious public rooms.
The rest of the vessel was given to freight storage and the mechanism and control compartments. Forward of the passenger structure the deck level continued under the cylindrical dome-roof to the bow. The forward watch-tower observatory was here; officers’ cabins; Captain Carter’s navigating rooms and Dr. Frank’s office. Similarly, under the stern-dome, was the stern watch-tower and a series of power compartments.
Above the superstructure a confusion of spider bridges, ladders and balconies were laced like a metal network. The turret in which Dr. Frank and I now stood was perched here. Fifty feet away, like a bird’s nest, Snap’s instrument room stood clinging to the metal bridge. The dome-roof, with the glassite windows rolled back now, rose in a mound-peak to cover this highest middle portion of the vessel.
Below, in the main hull, blue-lit metal corridors ran the entire length of the ship. Freight storage compartments; gravity control rooms; the air renewal systems; heater and ventilators and pressure mechanisms–all were located there. And the kitchens, stewards’ compartments, and the living quarters of the crew. We carried a crew of sixteen, this voyage, exclusive of the navigating officers, and the purser, Snap Dean, and Dr. Frank.
The passengers coming aboard seemed a fair representation of what we usually had for the outward voyage to Ferrok-Shahn. Most were Earth people–and returning Martians. Dr. Frank pointed out one. A huge Martian in a gray cloak. A seven-foot fellow.
“His name is Set Miko,” Dr. Frank remarked. “Ever heard of him?”
“No,” I said. “Should I?”
“Well–” The doctor suddenly checked himself, as though he were sorry he had spoken.
“I never heard of him,” I repeated slowly.
An awkward silence fell suddenly between us.
There were a few Venus passengers. I saw one of them presently coming up the incline, and recognized her. A girl traveling alone. We had brought her from Grebhar, last voyage but one. I remembered her. An alluring sort of girl, as most of them are. Her name was Venza. She spoke English well. A singer and dancer who had been imported to Great-New York to fill some theatrical engagement. She’d made quite a hit on the Great White Way.
She came up the incline, with the carrier ahead of her. Gazing up, she saw Dr. Frank and me at the turret window and waved her white arm in greeting. And flashed us a smile.
Dr. Frank laughed. “By the gods of the airways, there’s Alta Venza! You saw that look, Gregg? That was for me, not you.”
“Reasonable