Esk tapped her on the back. A couple of wizards with a rather greater presence of mind had nipped smartly out of the door behind them, and now several college porters were advancing threateningly up the hall, to the cheers and cat-calls of the students. Esk had never much liked the porters, who lived a private life in their lodge, but now she felt a pang of sympathy for them.

Two of them reached out hairy hands and grabbed Granny's shoulders. Her arm disappeared behind her back and there was a brief flurry of movement that ended with the men hopping away, clutching bits of themselves and swearing.

"Hatpin," said Granny. She grabbed Esk with her free hand and swept toward the high table, glaring at anyone who so much as looked as if they were going to get in her way. The younger students, who knew free entertainment when they saw it, stamped and cheered and banged their plates on the long tables. The high table settled on the tiles with a thump and the senior wizards hurriedly lined up behind Cutangle as he tried to summon up his reserves of dignity. His efforts didn't really work; it is very hard to look dignified with a napkin tucked into one's collar.

He raised his hands for silence, and the hall waited expectantly as Granny and Esk approached him. Granny was looking interestedly at the ancient paintings and statues of bygone mages.

"Who are them b.u.g.g.e.rs?" she said out of the corner of her mouth.

"They used to be chief wizards," whispered Esk.

"They look constipated. I never met a wizard who was regular," said Granny.

"They're a nuisance to dust, that's all I know," said Esk.

Cutangle stood with legs planted wide apart, arms akimbo and stomach giving an impression of a beginners' ski slope, the whole of him therefore adopting a pose usually a.s.sociated with Henry VIII but with an option on Henry IX and X as well.

"Well?" he said, "What is the meaning of this he said, "What is the meaning of this outrage outrage?"

"Is he important?" said Granny to Esk.

"I, madam, am the Archchancellor! And I happen to run this University! And you, madam, are trespa.s.sing in very dangerous territory indeed! I warn you that-Stop looking at me like that!"

Cutangle staggered backward, his hands raised to ward off Granny's gaze. The wizards behind him scattered, turning over tables in their haste to avoid the stare.

Granny's eyes had changed.

Esk had never seen them like this before. They were perfectly silver, like little round mirrors, reflecting all they saw. Cutangle was a vanishingly small dot in their depths, his mouth open, his tiny matchstick arms waving in desperation.

The Archchancellor backed into a pillar, and the shock made him recover. He shook his head irritably, cupped a hand and sent a stream of white fire streaking toward the witch.

Without dropping her iridescent stare Granny raised a hand and deflected the flames toward the roof. There was an explosion and a shower of tile fragments.

Her eyes widened.

Cutangle vanished. Where he had been standing a huge snake coiled, poised to strike.

Granny vanished. Where she had been standing was a large wicker basket.

The snake became a giant reptile from the mists of time.

The basket became the snow wind of the Ice Giants, coating the struggling monster with ice.

The reptile became a saber-toothed tiger, crouched to spring.

The gale became a bubbling tar pit.

The tiger managed to become an eagle, stooping.

The tar pits became a tufted hood.

Then the images began to flicker as shape replaced shape. Stroboscope shadows danced around the hall. A magical wind sprang up, thick and greasy, striking octarine sparks from beards and fingers. In the middle of it all Esk, peering through streaming eyes, could just make out the two figures of Granny and Cutangle, glossy statues in the midst of the hurtling images.

She was also aware of something else, a high-pitched sound almost beyond hearing.

She had heard it before, on the cold plain-a busy chittering noise, a beehive noise, an anthill sound...

"They're coming!" she screamed above the din. "They're coming now! now!"

She scrambled out from behind the table where she had taken refuge from the magical duel and tried to reach Granny. A gust of raw magic lifted her off her feet and bowled her into a chair.

The buzzing was louder now, so that the air roared like a three-week corpse on a summer's day. Esk made another attempt to reach Granny and recoiled when green fire roared along her arm and singed her hair.

She looked around wildly for the other wizards, but those who had fled from the effects of the magic were cowering behind overturned furniture while the occult storm raged over their heads.

Esk ran down the length of the hall and out into the dark corridor. Shadows curled around her as she hurried, sobbing, up the steps and along the buzzing corridors toward Simon's narrow room.

Something would try to enter the body, Granny had said. Something that would walk and talk like Simon, but would be something else... would try to enter the body, Granny had said. Something that would walk and talk like Simon, but would be something else...

A cl.u.s.ter of students were hovering anxiously outside the door. They turned pale faces toward Esk as she darted toward them, and were sufficiently shaken to draw back nervously in the face of her determined progress.

"Something's in there," said one of them.

"We can't open the door!"

They looked at her expectantly. Then one of them said: "You wouldn't have a pa.s.s key, by any chance?"

Esk grabbed the doorhandle and turned it. It moved slightly, but then spun back with such force it nearly took the skin off her hands. The chittering inside rose to a crescendo and there was another noise, too, like leather flapping.

"You're wizards!" she screamed. "b.l.o.o.d.y well wizz!"

"We haven't done telekinesis yet," said one of them.

"I was ill when we did Firethrowing-"

"Actually, I'm not very good at Dematerialization-"

Esk went to the door, and then stopped with one foot in the air. She remembered Granny talking about how even buildings had a mind, if they were old enough. The University was very old.

She stepped carefully to one side and ran her hands over the ancient stones. It had to be done carefully, so as not to frighten it-and now she could feel the mind in the stones, slow and simple, but still mind. It pulsed around her; she could feel the little sparkles deep in the rock.

Something was hooting behind the door.

The three students watched in astonishment as Esk stood rock still with her hands and forehead pressed against the wall.

She was almost there. She could feel the weight of herself, the ponderousness of her body, the distant memories of the dawn of time when rock was molten and free. For the first time in her life she knew what it was like to have balconies.

She moved gently through the building-mind, refining her impressions, looking as fast as she dared for this this corridor, this door. corridor, this door.

She stretched out one arm, very carefully. The students watched as she uncurled one finger, very slowly.

The door hinges began to creak.

There was a moment of tension and then the nails sprang from the hinges and clattered into the wall behind her. The planks began to bend as the door still tried to force itself open against the strength of-whatever was holding it shut.

The wood billowed billowed.

Beams of blue light lanced out into the corridor, moving and dancing as indistinct shapes shuffled through the blinding brilliance inside the room. The light was misty and actinic, the sort of light to make Steven Spielberg reach for his copyright lawyer.

Esk's hair leapt from her head so that she looked like an ambulant dandelion. Little firesnakes of magic crackled across her skin as she stepped through the doorway.

The students outside watched in horror as she disappeared into the light.

It vanished in a silent explosion.

When they eventually found enough courage to look inside the room, they saw nothing there but the sleeping body of Simon. And Esk, silent and cold on the floor, breathing very slowly. And the floor was covered with a fine layer of silver sand.

Esk floated through the mists of the world, noticing with a curious impersonal feeling the precise way in which she pa.s.sed through solid matter.

There were others with her. She could hear their chittering.

Fury rose like bile. She turned and set out after the noise, fighting the seductive forces that kept telling her how nice it would be just to relax her grip on her mind and sink into a warm sea of nothingness. Being angry, that was the thing. She knew it was most important to stay really angry.

The Discworld fell away, and lay below her as it did on the day she had been an eagle. But this time the Circle Sea was below her-it certainly was circular, as if G.o.d had run out of ideas-and beyond it lay the arms of the continent, and the long chain of the Ramtops marching all the way to the Hub. There were other continents she had never heard of, and tiny island chains.

As her point of view changed, the Rim came into sight. It was nighttime and, since the Disc's...o...b..ting sun was below the world, it lit up the long waterfall that girdled the Edge.

It also lit up Great A'Tuin the World Turtle. Esk had often wondered if the Turtle was really a myth. It seemed a lot of trouble to go to just to move a world. But there It was, almost as big as the Disc It carried, frosted with stardust and pocked with meteor craters.

Its head pa.s.sed in front of her and she looked directly into an eye big enough to float all the fleets in the world. She had heard it said that if you could look far enough into the direction that Great A'Tuin was staring, you would see the end of the universe. Maybe it was just the set of Its beak, but Great A'Tuin looked vaguely hopeful, even optimistic. Perhaps the end of everything wasn't as bad as all that.

Dreamlike, she reached out and tried to Borrow the biggest mind in the universe.

She stopped herself just in time, like a child with a toy toboggan who expected a little gentle slope and suddenly looks out of the magnificent mountains, snow-covered, stretching into the icefields of infinity. No one would ever Borrow that mind, it would be like trying to drink all the sea. The thoughts that moved through it were as big and as slow as glaciers.

Beyond the Disc were the stars, and there was something wrong with them. They were swirling like snowflakes. Every now and again they would settle down and look as immobile as they always did, and then they'd suddenly take it into their heads to dance.

Real stars shouldn't do that, Esk decided. Which meant she wasn't looking at real stars. Which meant she wasn't exactly in a real place. But a chittering close at hand reminded her that she could almost certainly really die if she once lost track of those noises. She turned and pursued the sounds through the stellar snowstorm.

And the stars jumped, and settled, jumped, and settled...

As she swooped upward Esk tried to concentrate on everyday things, because if she let her mind dwell on precisely what it was she was following then she knew she would turn back, and she wasn't sure she knew the way. She tried to remember the eighteen herbs that cured earache, which kept her occupied for a while because she could never recall the last four.

A star swooped past, and then was violently jerked away; it was about twenty feet across.

When she ran out of herbs she started on the diseases of goats, which took quite a long time because goats can catch a lot of things that cows can catch plus a lot of things plus that sheep plus catch plus a complete range of horrible ailments of their very own. When she had finished listing wooden udder, ear wilt and the octarine garget she tried to recall the complex code of dots and lines that they used to cut in the trees around Bad a.s.s, so that lost villagers could find their way home on snowy nights.

She was only as far as dot dot dot dash dot dash (Hub-by-Turnwise, one mile from the village) when the universe around her vanished with a faint pop. She fell forward, hit something hard and gritty and rolled to a halt.

The grittiness was sand. Fine, dry, cold cold sand. You could tell that even if you dug down several feet it would be just as cold and just as dry. sand. You could tell that even if you dug down several feet it would be just as cold and just as dry.

Esk lay with her face in it for a moment, summoning the courage to look up. She could just see, a few feet away from her, the hem of someone's dress. Something's dress, she corrected herself. Unless it was a wing. It could could be a wing, a particularly tatty and leathery one. be a wing, a particularly tatty and leathery one.

Her eyes followed it up until she found a face, higher than a house, outlined against the starry sky. Its owner was obviously trying to look nightmarish, but had tried too hard. The basic appearance was that of a chicken that had been dead for about two months, but the unpleasant effect was rather spoiled by warthog tusks, moth antennae, wolf ears and a unicorn spike. The whole thing had a self-a.s.sembled look, as if the owner had heard about anatomy but couldn't quite get to grips with the idea.

It was staring, but not at her. Something behind her occupied all its interest. Esk turned her head very slowly.

Simon was sitting cross-legged in the center of a circle of Things. There were hundreds of them, as still and silent as statues, watching him with reptilian patience.

There was something small and angular held in his cupped hands. It gave off a fuzzy blue light that made his face look strange.

Other shapes lay on the ground beside him, each in its little soft glow. They were the regular sort of shapes that Granny dismissed airily as jommetry-cubes, many-sided diamonds, cones, even a globe. Each one was transparent and inside was...

Esk edged closer. No one was taking any notice of her.

Inside a crystal sphere that had been tossed aside on to the sand floated a blue-green ball, crisscrossed with tiny white cloud patterns and what could almost have been continents if anyone was silly enough to try to live on a ball. It might have been a sort of model, except something about its glow told Esk that it was quite real and probably very big and not-in every sense-totally inside the sphere.

She put it down very gently and sidled over to a ten-sided block in which floated a much more acceptable world. It was properly disc-shaped, but instead of the Rimfall there was a wall of ice and instead of the Hub there was a gigantic tree, so big that its roots merged into mountain ranges.

A prism beside it held another slowly turning disc, surrounded by little stars. But there were no ice walls around this one, just a red-gold thread that turned out on closer inspection to be a snake-a snake big enough to encircle a world. For reasons best known to itself it was biting its own tail.

Esk turned the prism over and over curiously, noticing how the little disc inside stayed resolutely upright.

Simon giggled softly. Esk replaced the snake-disc and peered carefully over his shoulder.

He was holding a small gla.s.s pyramid. There were stars in it, and occasionally he would give it a little shake so that the stars swirled up like snow in the wind, and then settled back in their places. Then he would giggle.

And beyond the stars...

It was the Discworld. A Great A'Tuin no bigger than a small saucer toiled along under a world that looked like the work of an obsessive jeweler.

Jiggle, swirl. Jiggle, swirl, giggle. There were already hairline cracks in the gla.s.s.

Esk looked at Simon's blank eyes and then up into the hungry faces of the nearest Things, and then she reached across and pulled the pyramid out of his hands and turned and ran.

The Things didn't stir as she scurried toward them, bent almost double, with the pyramid clasped tightly to her chest. But suddenly her feet were no longer running over the sand and she was being lifted into the frigid air, and a Thing with a face like a drowned rabbit turned slowly toward her and extended a talon.

You're not really here, Esk told herself. It's only a sort of dream, what Granny calls an annaloggy. You can't really be hurt, it's all imagination. There's absolutely no harm that can come to you, it's all really inside your mind.

I wonder if it it knows that? knows that?

The talon picked her out of the air and the rabbit face split like a banana skin. There was no mouth, just a dark hole, as if the Thing was itself an opening to an even worse dimension, a place by comparison with which freezing sand and moonless moonlight would be a jolly afternoon at the seaside.

Esk held the Disc-pyramid and flailed with her free hand at the claw around her. It had no effect. The darkness loomed over her, a gateway to total oblivion.