And, of course, there was that other little matter.

She smiled in the dark and patted the camera in her lap as thunder growled louder and lightning lashed the mountaintops to the west. She knew her mother had trolled the disappearing crops mystery in front of her as a distraction, but that hadn't made the puzzle any less fascinating. She didn't really expect to solve it, yet she could have fun trying, and if it just happened that she did find the answer, well, she was sure she could accept the credit with becoming modesty.

Her smile curled up in urchin glee at the thought. The original idea might have been her mother's, and Dr. Harrington might have lent her enthusiastic support to Stephanie's approach to the problem, but Stephanie hadn't made her mother privy to every facet of her plan. Part of that was to avoid embarrassment if it didn't work, but most of it came from the simple knowledge that her parents wouldn't approve of her . . . hands-on approach. Fortunately, knowing what they would have said—had the occasion arisen—was quite different from actually having them say it when the occasion hadn't arisen, which was why she'd carefully avoided bringing the matter up at all.

For the past year or so, a mounting number of homesteads had reported vanishing crops. At first, people had been inclined to think it was some kind of hoax, especially since only one plant ever took missing. Personally, Stephanie couldn't imagine why anyone would want to steal celery, which she ate only under parental insistence, but it was obvious someone was.

The question was who. Logically, since celery was a Terran import, humans were the only people on Sphinx who should be interested in it, but the very limited evidence available suggested otherwise. Whoever was behind it must be fiendishly clever, for they seemed able to get in and out of places no human should have been able to sneak through, and they left very little in the way of clues. But Stephanie had noticed a pattern. First, the celery was always stolen from one of the more isolated homesteads, not from any of the farm plots or greenhouses near a town. And, second, whoever was stealing it operated only at night and, if possible, under cover of bad weather. For the most part, that had meant waiting to strike a greenhouse during a snow storm, when the blizzard would blot out any tracks they might leave, but Stephanie rather suspected that the bandits would find it hard to pass up the opportunity of a good, heavy thunderstorm. And if the raiders were not, in fact, simply a bunch of humans playing adolescent pranks—if, as she suspected, something native to Sphinx was behind it—then lurking out here in the dark might actually prove as interesting as the solo excursions into the woods which had been denied her.

Climbs Quickly clung to his pad as groaning branches lashed the night to protest the wind that roared among them. The rumbling thunder had drawn closer, barking more and more loudly, and lightning forks had begun to play about the mountain heads to the west. The storm was going to be even more powerful than he'd thought, and he smelled cold, wet rain on its breath. It would be here soon, he thought. Very soon, which meant it was time.

He climbed down the trunk more slowly and cautiously than was his wont, for he felt the sturdy tree quivering and shivering under his claws. It took him much longer than usual to reach the ground, and he paused, still a half dozen People-lengths up the tree, to survey his surroundings. The People were quick and agile anywhere, but true safety lay in their ability to scamper up into places where things like death fangs couldn't follow. Unfortunately, Climbs Quickly's plans required him to venture into an area without handy trees, and while it was unlikely to hold any death fangs, either, he saw no harm in double-checking to be certain of that.

But scan the night though he might, he detected no dangers other than those of the weather itself, and he dropped the last distance to the ground. The mud, he noted, had begun to dry—on the top, at least—but the rain would change that. He felt the faint, pounding vibration of raindrops through the ground, coming steadily nearer, and his ears flattened in resignation. If the reports about cluster stalk proved true, getting soaked would be small enough cost for this evening's excursion, but that didn't mean he would enjoy it, and he flirted his tail and scampered quickly towards the nearest plant place.

In planning her own approach to the disappearing celery mystery, Stephanie had studied everything she could get her hands on about previous thefts. Not that there'd been much to study; the mysterious thieves didn't strike often, and their first known raids had completely surprised the colonists. Since no one had seen any reason to take precautions against celery thefts, whoever the thieves were had been able to simply walk into the fields or greenhouses, scarf up their prizes, and disappear. Given that ease of operation, Stephanie had been surprised to discover how small the original thefts had been. With so clear a field of operations, the bandits should have been able to take as much as they pleased, yet their known hauls were so small that she suspected they'd been pilfering for quite a while before anyone even noticed.

It had taken a long time for anyone to take the reports seriously, and even when the colonists finally moved to put precautions in place, they'd started by trying the predictable—and simplest—measures. But locking greenhouse doors or fencing outdoor garden plots had failed miserably. Despite the unlikeliness that any Sphinxian creature could have a taste for a Terran vegetable, opinion (among those who didn't still think it was all a hoax, at least) had hardened in favor of some clever local animal. Had whatever it was shown an interest in anything but celery, that might have been a cause for alarm; as it was, most of those who'd been raided seemed to take it as a challenge, not a threat. Whatever the pest was, it had to be small, agile, fast, and sneaky, and they were determined to figure out what it was, but they had to act within the limits of the Elysian Rule. With no clear idea what they were after, it was impossible to be sure even capture traps would be nonlethal, and the Elysian Rule absolutely forbade the use of lethal means against a complete unknown without evidence that whatever it was posed a physical danger to humans.

That rule had been adopted over a thousand years before, after a disastrous clutch of mistakes had devastated the ecology of the colony world of Elysian, and no administration on a planet in the early stages of settlement would even consider its violation without a reason far more compelling than the minuscule economic loss thefts of celery represented. But that hadn't ruled out trip wires, photoelectric detectors, and pressure plates. They were attached to lights or alarms or passive camera systems, but somehow the celery thieves always seemed to avoid them. There had been that one time when someone—or, Stephanie thought deliciously, something–had tripped a camera over in Jefferies Land in the middle of a howling blizzard. Unfortunately, all the exterior camera had recorded was a lot of swirling snow.

Given how hard others had been working on the mystery, Stephanie was willing to admit that it was unlikely she would be the one to solve it. But that wasn't the same as impossible, and she'd been very careful to leave the ventilation louvers open on the greenhouse which contained her mother's celery. The odds were against anything coming along to take advantage of the opportunity, but it wasn't as if Stephanie had a lot of other things to do just now, and she settled back in her chair, camera in her lap, as the first spatters of rain began to fall.