Gefty took an oversized wrench from the wall, climbed quickly and quietly down the three ladder steps to the floor of the lock, and walked across it to the sill of the giant freight door, which now had swung out and down into the vault hall, fitting itself into a depression of the flooring. He hesitated an instant on the sill, then stepped out into the big dark hall. Light filled it immediately in both directions. He stood quiet, intent on the storage vault entrance far up the hall to his left. He could see the vault was open. The janandra might still be inside it. But the seconds passed, and the dark entrance remained silent and there was no suggestion of motion beyond it. Gefty glanced to the right, moved a dozen steps farther out into the hall, hefted the wrench and spun it through the air towards the ventilator frame on the opposite bulkhead. The heavy tool clanged loudly against the frame, bounced off and thudded to the floor. Gefty started slowly over to it, heart pounding, with the vault entrance still at the edge of his vision. Kerim's voice screamed, "_Gefty, it's_--" He spun around, sprinted back to the cargo lock. The janandra had come silently out of the nearest side passage behind him, was approaching with the remembered oiling swiftness of motion, its great head lifted a yard from the floor. Gefty plunged through the lock, jumped for the top of the cubicle door steps, came stumbling into the cubicle. Kerim was on her feet, staring. He swung the cubicle door switch to the left, slapping it flat to the panel. The door snapped back into the wall behind him with a force that shook the floor. On the screen, the janandra's thick, dark worm-shape was swinging around in the dim lock to regain the open hall. It had seen the trap. But the freight door switch went flat beside the other, and the freight door rose with massive swiftness. The heavy body smashed against it, went sliding back to the floor as the door slammed shut and the screen section showing the cargo lock turned dark. "Got it--got it--got it!" Gefty heard himself whispering exultantly. He switched on the lock's interior lights. Then he swore softly, and, beside him, Kerim sucked in her breath. * * * * * The screen showed the janandra in violent but apparently purposeful motion inside the lock ... and it was also apparent now that it was a more complexly constructed creature than the long worm-body and heavy head had indicated. The skin, to a distance of some eight feet back of the head, had spread out into a wide, flexible frill. From beneath the frill extended half a dozen jointed, bone-white arms, along with waving, ribbonlike appendages less easy to define. The thing was reared half up along the hall door, inspecting its surface with these members; then suddenly it flung itself around and flashed over to the outer lock door. Three arms shot out; wiry fingers caught the three spin-locks simultaneously, began to whirl them.