"Mr. Irizarry," she said, unfolding her arms long enough to stick one hand out in a facsimile of a congenial greeting.

He held up a hand in response, relieved to see no sign of recognition in her face. It was Irizarry's experience that dead lives were best left lie where they fell. "Sorry, Station Master," he said. "I can't."

He thought of asking her about the reek of toves on the air, if she understood just how bad the situation had become. People could convince themselves of a lot of bulls.h.i.t, given half a chance.

Instead, he decided to talk about his partner. "Mongoose hates it when I touch other people. She gets jealous, like a parrot."

"The cheshire's here?" She let her hand drop to her side, the expression on her face a mixture of respect and alarm. "Is it out of phase?"

Well, at least Station Master Lee knew a little more about cheshire-cats than most people. "No," Irizarry said. "She's down my shirt."

Half a standard hour later, wading through the damp bowels of a ventilation pore, Irizarry tapped his rebreather to try to clear some of the tove-stench from his nostrils and mouth. It didn't help much; he was getting close.

Here, Mongoose wasn't shy at all. She slithered up on top of his head, barbels and graspers extended to full length, pulsing slowly in predatory greens and reds. Her tendrils slithered through his hair and coiled about his throat, fading in and out of phase. He placed his fingertips on her slick-resilient hide to restrain her. The last thing he needed was for Mongoose to go spectral and charge off down the corridor after the tove colony.

It wasn't that she wouldn't come back, because she would-but that was only if she didn't get herself into more trouble than she could get out of without his help. "Steady," he said, though of course she couldn't hear him. A creature adapted to vacuum had no ears. But she could feel his voice vibrate in his throat, and a tendril brushed his lips, feeling the puff of air and the shape of the word. He tapped her tendril twice again-soon-and felt it contract. She flashed hungry orange in his peripheral vision. She was experimenting with jaguar rosettes-they had had long discussions of jaguars and tigers after their nightly reading of Pooh on the Manfred von Richthofen, as Mongoose had wanted to know what jagulars and tiggers were. Irizarry had already taught her about mongooses, and he'd read Alice in Wonderland so she would know what a Cheshire Cat was. Two days later-he still remembered it vividly-she had disappeared quite slowly, starting with the tips of the long coils of her tail and tendrils and ending with the needle-sharp crystalline array of her teeth. And then she'd phased back in, all excited aquamarine and pink, almost bouncing, and he'd praised her and stroked her and reminded himself not to think of her as a cat. Or a mongoose.

She had readily grasped the distinction between jaguars and jagulars, and had almost as quickly decided that she was a jagular; Irizarry had almost started to argue, but then thought better of it. She was, after all, a Very Good Dropper. And noever saw her coming unless she wanted them to.

When the faint glow of the toves came into view at the bottom of the pore, he felt her shiver all over, luxuriantly, before she shimmered dark and folded herself tight against his scalp. Irizarry doused his own lights as well, flipping the pa.s.sive infrared goggles down over his eyes. Toves were as blind as Mongoose was deaf, but an infestation this bad could mean the cracks were growing large enough for bigger things to wiggle through, and if there were raths, no sense in letting the monsters know he was coming.

He tapped the tendril curled around his throat three times, and whispered "Go." She didn't need him to tell her twice; really, he thought wryly, she didn't need him to tell her at all. He barely felt her featherweight disengage before she was gone down the corridor as silently as a hunting owl. She was invisible to his goggles, her at ambient temperature, but he knew from experience that her barbels and vanes would be spread wide, and he'd hear the shrieks when she came in among the toves.

The toves covered the corridor ceiling, arm-long carapaces adhered by a foul-smelling secretion that oozed from between the sections of their exoskeletons. The upper third of each tove's bent down like a dangling bough, bringing the glowing, sticky lure and flesh-ripping pincers into play. Irizarry had no idea what they fed on in their own phase, or dimension, or whatever.

Here, though, he knew what they ate. Anything they could get.

He kept his shock probe ready, splashing after, to a.s.sist her if it turned out necessary. That was sure a lot of toves, and even a cheshire-cat could get in trouble if she was outnumbered. Ahead of him, a tove warbled and went suddenly dark; Mongoose had made her first kill.

Within moments, the tove colony was in full warble, the harmonics making Irizarry's head ache. He moved forward carefully, alert now for signs of raths. The largest tove colony he'd ever seen was on the derelict steelship Jenny Lind, which he and Mongoose had explored when they were working salvage on the boojum Harriet Tubman. The hulk had been covered inside and out with toves; the colony was so vast that, having eaten everything else, it had started cannibalizing itself, toves eating their neighbors and being eaten in turn. Mongoose had glutted herself before the Harriet Tubman ate the wreckage, and in the refuse she left behind, Irizarry had found the strange starlike bones of an adult rath, consumed by its own prey. The banders.n.a.t.c.h that had killed the humans on the Jenny Lind had died with her reactor core and her captain. A handful of pa.s.sengers and crew had escaped to tell the tale.

He refocused. This colony wasn't as large as those heaving ma.s.ses on the Jenny Lind, but it was the largest he'd ever encountered not in a quarantine situation, and if there weren't raths somewhere on Kadath Station, he'd eat his infrared goggles.

A dead tove landed at his feet, its eyeless head neatly separated from its segmented body, and a heartbeat later Mongoose phased in on his shoulder and made her deep clicking noise that meant, Irizarry! Pay attention!

He held his hand out, raised to shoulder level, and Mongoose flowed between the two, keeping her bulk on his shoulder, with tendrils resting against his lips and larynx, but her tentacles wrapping around his hand to communicate. He pushed his goggles up with his free hand and switched on his belt light so he could read her colors.

She was anxious, strobing yellow and green. Many, she shaped against his palm, and then emphatically, R.

"R" was bad-it meant rath-but it was better than "B." If a banders.n.a.t.c.h had come through, all of them were walking dead, and Kadath Station was already as doomed as the Jenny Lind. "Do you smell it?" he asked under the warbling of the toves.

Taste, said Mongoose, and because Irizarry had been her partner for almost five Solar, he understood: the toves tasted of rath, meaning that they had recently been feeding on rath guano, and given the swiftness of toves' digestive systems, that meant a rath was patrolling territory on the station.

Mongoose's grip tightened on his shoulder. R, she said again. R. R. R.

Irizarry's heart lurched and sank. More than one rath. The cracks were widening.

A banders.n.a.t.c.h was only a matter of time.

Station Master Lee didn't want to hear it. It was all there in the way she stood, the way she pretended distraction to avoid eye-contact. He knew the rules of this game, probably better than she did. He stepped into her personal s.p.a.ce. Mongoose shivered against the nape of his neck, her tendrils threading his hair. Even without being able to see her, he knew she was a deep, anxious emerald.

"A rath?" said Station Master Lee, with a toss of her head that might have looked flirtatious on a younger or less hostile woman, and moved away again. "Don't be ridiculous. There hasn't been a rath on Kadath Station since my grandfather's time."

"Doesn't mean there isn't an infestation now," Irizarry said quietly. If she was going to be dramatic, that was his cue to stay still and calm. "And I said raths. Plural."

"That's even more ridiculous. Mr. Irizarry, if this is some ill-conceived attempt to drive up your price-"

"It isn't." He was careful to say it flatly, not indignantly. "Station Master, I understand that this isn't what you want to hear, but you have to quarantine Kadath."

"Can't be done," she said, her tone brisk and flat, as if he'd asked her to pilot Kadath through the rings of Saturn.

"Of course it can!" Irizarry said, and she finally turned to look at him, outraged that he dared to contradict her. Against his neck, Mongoose flexed one set of claws. She didn't like it when he was angry.

Mostly, that wasn't a problem. Mostly, Irizarry knew anger was a waste of time and energy. It didn't solve anything. It didn't fix anything. It couldn't bring back anything that was lost. People, lives. The sorts of things that got washed away in the tides of time. Or were purged, whether you wanted them gone or not.

But this was... "You do know what a colony of adult raths can do, don't you? With a contained population of prey? Tell me, Station Master, have you started noticing fewer indigents in the shelters?"

She turned away again, dismissing his existence from her cosmology. "The matter is not open for discussion, Mr. Irizarry. I hired you to deal with an alleged infestation. I expect you to do so. If you feel you can't, you are of course welcome to leave the station with whatever ship takes your fancy. I believe the Arthur Gordon Pym is headed in-system, or perhaps you'd prefer the Jupiter run?"

He didn't have to win this fight, he reminded himself. He could walk away, try to warn someelse, get himself and Mongoose the h.e.l.l off Kadath Station. "All right, Station Master. But remember that I warned you, when your secretaries start disappearing."

He was at the door when she cried, "Irizarry!"

He stopped, but didn't turn.

"I can't," she said, low and rushed, as if she was afraid of being overheard. "I can't quarantine the station. Our numbers are already in the red this quarter, and the new political officer... it's my head on the block, don't you understand?"

He didn't understand. Didn't want to. It was one of the reasons he was a wayfarer, because he never wanted to let himself be like her again.

"If Sanderson finds out about the quarantine, she finds out about you. Will your papers stand up to a close inspection, Mr. Irizarry?"

He wheeled, mouth open to tell her what he thought of her and her clumsy attempts at blackmail, and she said, "I'll double your fee."

At the same time, Mongoose tugged on several strands of his hair, and he realized he could feel her heart beating, hard and rapid, against his spine. It was her distress he answered, not the Station Master's bribe. "All right," he said. "I'll do the best I can."

Toves and raths colonized like an epidemic, outward from a single originating point, Patient Zero in this case being the tear in s.p.a.cetime that the first tove had wriggled through. More tears would develop as the toves multiplied, but it was that first one that would become large enough for a rath. While toves were simply lazy-energy efficient, the Arkhamers said primly-and never crawled farther than was necessary to find a useable anchoring point, raths were cautious. Their marauding was centered on the original tear because they kept their escape route open. And tore it wider and wider.

Toves weren't the problem, although they were a nuisance, with their tendency to use up valuable oxygen, clog ductwork, eat pets, drip goo from ceilings, and crunch wetly when you stepped on them. Raths were worse; raths were vicious predators. Their natural prey might be toves, but they didn't draw the line at disappearing weakened humans or small gillies, either.

But even they weren't the danger that had made it hard for Irizarry to sleep the past two rest shifts. What toves tore and raths widened was an access for the apex predator of this alien food chain.

The banders.n.a.t.c.h: Pseudocanis tindalosi. The old records and the indigent Arkhamers called them hounds, but of course they weren't, any more than Mongoose was a cat. Irizarry had seen archive video from derelict stations and ships, the banders.n.a.t.c.h's flickering angular limbs appearing like spiked mantis arms from the corners of sealed rooms, the carnage that ensued. He'd never heard of anyone left alive on a station where a banders.n.a.t.c.h manifested, unless they made it to a panic pod d.a.m.ned fast. More importantly, even the Arkhamers in their archive-ships, breeders of Mongoose and all her kind, admitted they had no records of anyone surviving a banders.n.a.t.c.h rather than escaping it.

And what he had to do, loosely put, was find the core of the infestation before the banders.n.a.t.c.hes did, so that he could eradicate the toves and raths and the stress they were putting on this little corner of the universe. Find the core-somewhere in the miles upon miles of Kadath's infrastructure. Which was why he was in this little-used service corridor, letting Mongoose commune with every ventilation duct they found.

Anywhere near the access shafts infested by the colony, Kadath Station's pa.s.sages reeked of tove-ammoniac, sulfurous. The stench infiltrated the edges of Irizarry's mask as he lifted his face to a ventilation duct. Wincing in antic.i.p.ation, he broke the seal on the rebreather and pulled it away from his face on the stiff elastic straps, careful not to lose his grip. A broken nose would not improve his day.

A cultist engineer skittered past on sucker-tipped limbs, her four snake-arms coiled tight beside her for the narrow corridor. She had a pretty smile, for a Christian.

Mongoose was too intent on her prey to be shy. The size of the tove colony might make her nervous, but Mongoose loved the smell-like a good dinner heating, Irizarry imagined. She unfolded herself around his head like a tendriled hood, tentacles outreached, flaring as she stretched towards the ventilation fan. He felt her lean, her barbels shivering, and turned to face the way her wedge-shaped head twisted.

He almost tipped backwards when he found himself face to face with someone he hadn't even known was there. A woman, average height, average weight, brown hair drawn back in a smooth club; her skin was s.p.a.ce-pale and faintly reddened across the cheeks, as if the IR filters on a suit hadn't quite protected her. She wore a sleek s.p.a.ce-black uniform with dull silver epaulets and four pewter-colored bands at each wrist. An insignia with a stylized sun and Earth-Moon dyad clung over her heart.

The political officer, who was obviously unconcerned by Mongoose's ostentatious display of sensory equipment.

Mongoose absorbed her tendrils in like a startled anemone, pressing the warm underside of her head to Irizarry's scalp where the hair was thinning. He was surprised she didn't vanish down his shirt, because he felt her trembling against his neck.

The political officer didn't extend her hand. "Mr. Irizarry? You're a hard man to find. I'm Intelligence Colonel Sadhi Sanderson. I'd like to ask you a few quick questions, please."

"I'm, uh, a little busy right now," Irizarry said, and added uneasily, "Ma'am." The last thing he wanted was to offend her.

Sanderson looked up at Mongoose. "Yes, you would appear to be hunting," she said, her voice dry as scouring powder. "That's one of the things I want to talk about."

Oh s.h.i.t. He had kept out of the political officer's way for a day and a half, and really that was a pretty good run, given the obvious tensions between Lee and Sanderson, and the things he'd heard in the Transient Barracks: the gillies were all terrified of Sanderson, and noseemed to have a good word for Lee. Even the Christians, mouths thinned primly, could say of Lee only that she didn't actively persecute them. Irizarry had been stuck on a steelship with a Christian congregation for nearly half a year once, and he knew their eagerness to speak well of everyone; he didn't know whether that was actually part of their faith, or just a survival tactic, but when Elder Dawson said, "She does not trouble us," he understood quite precisely what that meant.

Of Sanderson, they said even less, but Irizarry understood that, too. There was no love lost between the extremist cults and the government. But he'd heard plenty from the ice miners and dock workers and particularly from the crew of an impounded steelship who were profanely eloquent on the subject. Upshot: Colonel Sanderson was new in town, cleaning house, and profoundly not a woman you wanted to f.u.c.k with.

"I'd be happy to come to your office in an hour, maybe two?" he said. "It's just that-"

Mongoose's grip on his scalp tightened, sudden and sharp enough that he yelped; he realized that her head had moved back toward the duct while he fenced weakly with Colonel Sanderson, and now it was nearly in the duct, at the end of a foot and a half of iridescent neck.

"Mr. Irizarry?"

He held a hand up, because really this wasn't a good time, and yelped again when Mongoose reached down and grabbed it. He knew better than to forget how fluid her was, that it was really no more than a compromise with the dimension he could sense her in, but sometimes it surprised him anyway.

And then Mongoose said, Nagina, and if Colonel Sanderson hadn't been standing right there, her eyebrows indicating that he was already at the very end of the slack she was willing to cut, he would have cursed aloud. Short of a banders.n.a.t.c.h-and that could still be along any time now, don't forget, Irizarry-a breeding rath was the worst news they could have.

"Your cheshire seems unsettled," Sanderson said, not sounding in the least alarmed. "Is there a problem?"

"She's eager to eat. And, er. She doesn't like strangers." It was as true as anything you could say about Mongoose, and the violent colors cycling down her tendrils gave him an idea what her chromatoph.o.r.es were doing behind his head.

"I can see that," Sanderson said. "Cobalt and yellow, in that stippled pattern-and flickering in and out of phase-she's acting aggressive, but that's fear, isn't it?"

Whatever Irizarry had been about to say, her observation stopped him short. He blinked at her-like a gilly, he thought uncharitably-and only realized he'd taken yet another step back when the warmth of the bulkhead pressed his coveralls to his spine.

"You know," Sanderson said mock-confidentially, "this entire corridor reeks of toves. So let me guess: it's not just toves anymore."

Irizarry was still stuck at her being able to read Mongoose's colors. "What do you know about cheshires?" he said.

She smiled at him as if at a slow student. "Rather a lot. I was on the Jenny Lind as an ensign-there was a cheshire on board, and I saw... It's not the sort of thing you forget, Mr. Irizarry, having been there once." Something complicated crossed her face-there for a flash and then gone. "The cheshire that died on the Jenny Lind was called Demon," Irizarry said, carefully. "Her partner was Long Mike Spider. You knew them?"

"Spider John," Sanderson said, looking down at the backs of her hands. She picked a cuticle with the opposite thumbnail. "He went by Spider John. You have the cheshire's name right, though."

When she looked back up, the arch of her carefully shaped brow told him he hadn't been fooling anyone.

"Right," Irizarry said. "Spider John."

"They were friends of mine." She shook her head. "I was just a pup. First billet, and I was a.s.signed as Demon's liaison. Spider John liked to say he and I had the same job. But I couldn't make the captain believe him when he tried to tell her how bad it was."

"How'd you make it off after the banders.n.a.t.c.h got through?" Irizarry asked. He wasn't foolish enough to think that her confidences were anything other than a means of demonstrating to him why he could trust her, but the frustration and tired sadness sounded sincere.

"It went for Spider John first-it must have known he was a threat. And Demon-she threw herself at it, never mind it was five times her size. She bought us time to get to the panic pod and Captain Golovnina time to get to the core overrides. " She paused. "I saw it, you know. Just a glimpse. Wriggling through this... this rip in the air, like a big gaunt hound ripping through a hole in a blanket with knotty paws. I spent years wondering if it got my scent. Once they scent prey, you know, they never stop... . "

She trailed off, raising her gaze to meet his. He couldn't decide if the furrow between her eyes was embarra.s.sment at having revealed so much, or the calculated cataloguing of his response.

"So you recognize the smell, is what you're saying."

She had a way of answering questions with other questions. "Am I right about the raths?"

He nodded. "A breeder."

She winced.

He took a deep breath and stepped away from the bulkhead. "Colonel Sanderson-I have to get it now if I'm going to get it at all."

She touched the microwave pulse pistol at her hip. "Want some company?"

He didn't. Really, truly didn't. And if he had, he wouldn't have chosen Kadath Station's political officer. But he couldn't afford to offend her... and he wasn't licensed to carry a weapon.

"All right," he said and hoped he didn't sound as grudging as he felt. "But don't get in Mongoose's way."

Colonel Sanderson offered him a tight, feral smile. "Wouldn't dream of it."

The only thing that stank more than a pile of live toves was a bunch of half-eaten ones.

"Going to have to vacuum-scrub the whole sector," Sanderson said, her breath hissing through her filters.

If we live long enough to need to, Irizarry, thought, but had the sense to keep his mouth shut. You didn't talk defeat around a politico. And if you were unfortunate enough to come to the attention of one, you certainly didn't let her see you thinking it.

Mongoose forged on ahead, but Irizarry noticed she was careful to stay within the range of his lights, and at least one of her tendrils stayed focused back on him and Sanderson at all times. If this were a normal infestation, Mongoose would be scampering along the corridor ceilings, leaving scattered bits of half-consumed tove and streaks of bioluminescent ichor in her wake. But this time, she edged along, testing each surface before her with quivering barbels so that Irizarry was reminded of a tentative spider or an exploratory octopus.

He edged along behind her, watching her colors go dim and cautious. She paused at each intersection, testing the air in every direction, and waited for her escort to catch up.

The service tubes of Kadath Station were mostly large enough for Irizarry and Sanderson to walk single-file through, though sometimes they were obliged to crouch, and once or twice Irizarry found himself slithering on his stomach through tacky half-dried tove slime. He imagined-he hoped it was imagining-that he could sense the thinning and stretch of reality all around them, see it in the warp of the tunnels and the bend of deck plates. He imagined that he glimpsed faint shapes from the corners of his eyes, caught a whisper of sound, a hint of scent, as of something almost there.

Hypochondria, he told himself firmly, aware that that was the wrong word and not really caring. But as he dropped down onto his belly again, to squeeze through a tiny access point-this one clogged with the fresh corpses of newly-slaughtered toves-he needed all the comfort he could invent.

He almost ran into Mongoose when he'd cleared the hole. She scuttled back to him and huddled under his chest, tendrils writhing, so close to out of phase that she was barely a warm shadow. When he saw what was on the other side, he wished he'd invented a little more.

This must be one of Kadath Station's recycling and reclamation centers, a bowl ten meters across sweeping down to a pile of rubbish in the middle. These were the sorts of places you always found minor tove infestations. Ships and stations might be supposed to be kept clear of vermin, but in practice, the dimensional stresses of sharing the s.p.a.celanes with boojums meant that just wasn't possible. And in Kadath, somehadn't been doing their job.

Sanderson touched his ankle, and Irizarry hastily drew himself aside so she could come through after. He was suddenly grateful for her company.

He really didn't want to be here alone.

Irizarry had never seen a tove infestation like this, not even on the Jenny Lind. The entire roof of the chamber was thick with their sluglike bodies, long lure-tongues dangling as much as half a meter down. Small flitting things-young raths, near-transparent in their phase shift-filled the s.p.a.ce before him. As Irizarry watched, one blundered into the lure of a tove, and the tove contracted with sudden convulsive force. The rath never stood a chance.

Nagina, Mongoose said. Nagina, Nagina, Nagina.