Her long legs, clad in skintight black plastic, pumped smoothly as she sprinted down the central aisle of the Dolomite's great central cargo hold. The creature, three times her height, colored an unremitting black, with jaws filled with long closely packed fanglike teeth, came after her. Feeling herself being overtaken, Julie dodged and swerved around the faintly delineated center line of the hold. This one narrow strip had been set for twenty percent less of the faux gravity that so much resembled the real thing. Running on the light-gravity strip made her feel as though she had wings, so rapidly did she move, dodging fixed objects as they came up to smear her, vaulting over smaller obstacles, always moving, the sound of her own blood pounding in her ears.

The creature came running after her, and a ray of light from a globe in the ceiling picked it up for a moment.

It appeared to be a full-size alien, with the typical backward-sloping cranium of its kind.

The thing was as startling as an apparition from hell. Its claws, with their doubled fingers, reached for her. Julie turned and fled down the narrow confines of the hold.

The area she ran in widened, and the creature managed to gain a few steps on her.

Stan, watching the action on a monitor in the control room, yelped in alarm as the creature loomed over her. He asked himself why he had ever agreed to let Julie take this training run. Thinking about it now, he could see that it had been an unnecessary risk. If anything went wrong, it could jeopardize the whole operation.

And aside from that, if Julie got hurt … But he couldn't let himself think about that.

Julie and the alien dodged around enormous packing cases, cubes of plastic ten feet on a side. There were a dozen or so of them, and they were scattered randomly on the floor, part of the clutter that accumulates in any spaceship. Julie ran her fingers over the edge of a box. With a quick look aided by her flashlight, she had fixed its location. A memory of the placement of the other boxes was burned into her short-term memory. In her mind she could see the zig-zag path she would have to follow to get to the next bulkhead. After that, a sally port served as a midpoint connection to the next part of the ship's hold.

She ran full out, counting off step by step. Crossing a crowded room in darkness with speed and silence is one of a thief's most useful accomplishments. Julie continued across the hold, her senses on red alert, trying once again to locate the creature that was stalking her. Norbert was good, he was very quiet, she had to give him that. He had learned how to muffle his body movements, and even to quiet the sounds of his body functions. Good as he was, she still was aware of him, but it was an awareness that flickered in and out of existence.

After the midpoint sally exit, she came to the platform that blocked the way to the farthest exit. It was a prestressed antimagnetic steel plate approximately twenty feet wide by two hundred feet long, and five inches deep. She climbed up onto it. It was drilled with many large, irregularly spaced holes ranging in diameter from two to five feet, where components would be fitted later. Running the length of the plate left you vulnerable to stepping into a hole and breaking a leg, or falling through an unshielded ventilator shaft to the deck below.

She had to slow down to make it across. Julie went down the length of the platform at a half-speed sprint, unable visually to detect the openings in the darkness, relying on memory. Norbert came loping along steadily after her. She noticed that he, too, must have memorized the locations of the holes, because he was moving confidently and quickly. She forced herself to go a little faster, even though it increased her chances of a fall.

She reached the far end and hopped off. Norbert had gained several steps on her. She hoped to make it up in the next stage.

Just ahead were the spare firing tubes, big cylinders of cold-rolled steel, eighteen of them, each a hundred and eighty feet long. Moving by touch, Julie located a pipe with an aperture that would just permit her to squeeze in. Norbert, with his greater size, wouldn't be able to follow, would be forced to walk on top of the slippery pipes, thus giving Julie a brief breathing spell. A good escape could be composed of moments like these.

That, at least, was how it was supposed to work. Norbert stopped and looked at the pipe, started to go around it, then came back and managed somehow to collapse his shoulders and crawl into the pipe after her. She could hear the tortured metal-to-metal squealing as he pushed himself through the pipe.

Then she realized that not only was he in the pipe behind her, he was gaining, collapsing himself down to half his usual size and scuttling along like a giant malevolent insect. A sudden sense of claustrophobia came over Julie as she imagined Norbert's big clawed hand closing over her foot.

She forced herself to remain calm. “You won't go any faster in a panic,” she reminded herself. One of the first lessons Shen Hui had taught her was to be extra cool in the face of a crisis, to force herself to slow down just when her senses were shrieking at her to speed up. This lesson stood her in good stead now. Suddenly the darkness came to an end and she was out of the pipe and running, a fraction of a second ahead of the alien.

She dodged instinctively as Norbert's arm reached out for her. In a moment's inattention, she slammed into a precariously balanced cart containing machine parts and ball bearings. Metal objects flew in all directions and clattered against the sides of the hold. Julie came down on a bearing in midstride and both her feet shot out from under her. Catlike, she turned in midair, throwing up a protective forearm before she went crashing to the floor on her face.

As she sprawled Norbert loomed above her, arms spread wide, jaws open in a terrifying grimace. Through his open jaws the little inner jaws came flickering out, more malevolent than a crazed pit viper.

Norbert lunged at her, and she was momentarily unable to do anything to protect herself. He was almost on her….

She had an instant to wonder what he was programmed to do if he caught her… or did he make up that part as he went along?

And then Norbert slipped on the bearings and lost his balance. His taloned feet raked the metal floor as he tried to gain purchase. He crashed to the deck with a bone-smattering sound.

For a moment Norbert sprawled there. His resemblance to a giant insect was now apparent as his arms and legs twitched and vibrated, trying to find something to hold. Then he righted himself and was up again and towering over her.

Unable to do anything, Stan had to watch. His fingernails were already ragged, for he had been chewing at bloody cuticles while monitoring Julie's progress. He leaned forward, intent.

Julie, at the last possible moment, slipped through the alien's claws and disappeared through the horizontally closing metal slabs at the end of the hold. The creature yowled in rage as the door shut in his face and Julie shot the lock.

Immediately Norbert began wrenching at the door, then, having no luck with the lock, turned his attention to the hinges.

Julie meanwhile was streaking through the cluttered compartment, sprinting at full stride and managing somehow to avoid the clutter of machines and packing cases that turned the place into an obstacle course filled with cutting edges.

Stan was able to track her progress on his monitor against a schematic of the ship's hold.

He watched a tiny silver dot, representing Julie, dodge around objects ahead of a longer blue-black streak that represented her pursuer.

“Come on, Julie,” Stan muttered to himself. “You don't have to run it this close! Pull the plug! Bail out!”

But Julie kept running. She seemed to be going for some kind of a record. Never had she been so graceful, so light on her feet. She had reached the far end of the compartment. The egress port was dogged down tight. Norbert was less than five feet behind her now. He reached for her with taloned claws, ending in dagger-sharp tips. Julie stood her ground, and Stan couldn't help but admire the game quality of her courage.