'You could not if you wanted to. I would bid you a good day. But I'd wager you've never had one.' And he sauntered out, the door clicking to behind him.

Ferro was already across the room, shooting back the bolt on the window. She had done as Bayaz told her once before, and it had brought her nothing but a wasted year. She would make her own choices now. She jerked the hangings aside and slipped out onto the balcony. Curled-up leaves blew on the wind, whipping around the lawns below along with the spitting rain. A quick glance up and down the damp paths showed only one guard, and he was looking the wrong way, huddled in his cloak.

Sometimes it is best to seize the moment.

Ferro swung her legs over the rail, gathered herself, then sprang out into the air. She caught a slippery tree branch, swung to the trunk, slid down it to the damp earth and crept behind a neatly clipped hedge, low to the ground.

She heard footsteps, then voices. Bayaz' voice, and Yulwei's, speaking soft into the hissing wind. Damn, but these old fools of Magi loved to flap their lips.

'Sulfur?' came Yulwei's voice. 'He is still with you?'

'Why would he not be?'

'His studies ran in . . . dangerous directions. I told you this, brother.'

'And? Khalul is not so picky with his servants . . .'

They passed out of earshot and Ferro had to rush along behind the hedge to keep pace, staying bent double.

'. . . I do not like this habit,' Yulwei was saying, 'of taking forms, of changing skin. A cursed discipline. You know what Juvens' feelings were on it-'

'I have no time to worry on the feelings of a man centuries in his grave. There is no Third Law, Yulwei.'

'Perhaps there should be. Stealing another's face . . . the tricks of Glustrod and his devil-bloods. Arts borrowed from the Other Side-'

'We must use such weapons as we can find. I have no love for Mamun, but he is right. They are called the Hundred Words because they are a hundred. We are two, and time has not been kind to us.'

'Then why do they wait?'

'You know Khalul, brother. Ever careful, watchful, deliberate. He will not risk his children until he must . . .'

Through the chinks in the bare twigs Ferro watched the three men pass between the guards and out of the gate in the high palace wall. She gave them a few moments, then she started up and strode after, shoulders back, as though she was about important business. She felt the hard stares of the armoured men flanking the gate, but they were used to her coming and going now. For once they kept their silence.

Between the great buildings, around the statues, through the dull gardens she followed the two Magi and their apprentice across the Agriont. She kept her distance, loitering in doorways, under trees, walking close behind those few people hurrying down the windy streets. Sometimes, above the buildings in a square, or at the end of a lane, the top of the great mass of the Maker's House reared up. Hazy grey through the drizzle to begin with, but growing more black, vast and distinct with each stride she took.

The three men led her to a ramshackle building with crumbling turrets sticking from its sagging roof. Ferro knelt and watched from behind a corner while Bayaz beat on the rickety door with the end of his staff.

'I am glad you did not find the Seed, brother,' said Yulwei, while they waited. 'That thing is better left buried.'

'I wonder if you will still think so when the Hundred Words swarm through the streets of the Agriont, howling for our blood?'

'God will forgive me, I think. There are worse things than Khalul's Eaters.'

Ferro's nails dug into her palms. There was a figure standing at one of the grimy windows, peering out at Yulwei and Bayaz. A long, lean figure with a black mask and short hair. The woman who had chased her and Ninefingers, long before. Ferro's hand strayed on an instinct towards her sword, then she realised she had left it in the palace, and cursed her foolishness. Ninefingers had been right. You could never have too many knives.

The door wobbled open, some words were muttered, the two old men went through, Quai at their back, head bowed. The masked woman watched for a while longer, then stepped back from the window into the darkness. Ferro sprang over a hedge as the door wobbled closed, wedged her foot in the gap and slid through sideways, stealing into the deep shadows on the other side. The door clattered shut on its creaking hinges.

Down a long hallway, dusty paintings on one wall, dusty windows in the other. All the way the back of Ferro's neck prickled, waiting for the black masks to come boiling out of the shadows. But nothing came besides the echoing footsteps up ahead, the mindless droning of the old men's voices.

'This place has changed,' Yulwei was saying. 'Since that day we fought Kanedias. The day the Old Time ended. It rained, then.'

'I remember it.'

'I lay wounded on the bridge, in the rain. I saw them fall, the Maker and his daughter. From on high, they tumbled down. Hard to believe, that I smiled to see it, then. Vengeance is a fleeting thrill. The doubts, we carry to our graves.' Ferro sneered at that. If she could have the vengeance she would live with the doubts.

'Time has brought us both regrets,' muttered Bayaz.

'More of them with every passing year. A strange thing, though. I could have sworn, as I lay there, that it was Kanedias who fell first, and Tolomei second.'

'Memory can tell lies, especially to men who have lived as long as we. The Maker threw down his daughter, then I him. And so the Old Time ended.'

'So it did,' murmured Yulwei. 'So much lost. And now we are come to this . . .'

Quai's head snapped round and Ferro plastered herself against the wall behind a leaning cabinet. He stood there, for a long moment, frowning towards her. Then he followed the others. Ferro waited, holding her breath, until the three of them turned a corner and passed out of sight.

She caught them up in a crumbling courtyard, choked with dead weeds, littered with broken slates fallen from the roofs above. A man in a stained shirt led them up a long stairway, towards a dark arch high in the high wall of the Agriont. He had a bunch of jingling keys in his gnarled hands, was muttering something about eggs. Once they had passed into the tunnel Ferro padded across the open space and up the steps, pausing near the top.

'We will come back shortly,' she heard Bayaz growling. 'Leave the door ajar.'

'It's always kept locked,' a voice answered. 'That's the rule. It's been kept locked all my life, and I don't plan to-'

'Then wait here until we come back! But go nowhere! I have many better things to do than sit waiting on the wrong side of your locked doors!' Keys turned. Old hinges squealed. Ferro's fingers slid round a loose lump of stone and gripped it tightly.

The man in the dirty shirt was pulling the gates shut as she crept to the top of the steps. He muttered angrily as he fumbled with his keys, metal clinking. There was a dull thump as the stone clubbed him across his bald spot. He gasped, lurched forward, Ferro caught his limp body under the arms and lowered him carefully to the ground.

Then she set the rock down and relieved him of his keys with a hooked finger.

As Ferro lifted her hand to push the doors open, a strange sensation washed over her. Like a cool breeze on a hot day, surprising, at first, then delightful. A shiver, not at all unpleasant, worked its way up her spine and made her breath catch. She pressed her hand to the weathered wood, the grain brushing warm and welcoming against her palm. She eased the door open just wide enough to peer through.

A narrow bridge sprang out from the wall of the Agriont, no more than a stride across, without rail or parapet. At the far end it met the side of the Maker's House a soaring cliff of bare rock, shining black with the rain. Bayaz, Yulwei and Quai stood before a gate at the end of that strip of stone. A gate of dark metal, marked in the centre with bright circles. Rings of letters that Ferro did not understand. She watched Bayaz pull something out from the collar of his shirt. She watched the circles begin to move, to turn, to spin, her heart pounding in her ears. The doors moved silently apart. Slowly, reluctantly, almost, the three men passed into that square of blackness, and were gone.

The House of the Maker stood open.

Grey water slapped at hard stone below as Ferro followed them across the bridge. The rain kissed and the wind nipped at her skin. In the distance, smudges of smoke rose from the smouldering city and into the muddy sky, but her eyes were fixed on the yawning portal straight ahead. She loitered on the threshold for a moment, her hands clenched into fists.

Then she stepped into the darkness.

It was neither cold nor warm on the other side of the gate. The air was so still, and flat, and silent that it seemed to weigh heavily on Ferro's shoulders, to press at her ears. A few muffled steps and the light had all faded. Wind, and rain, and the open sky were dimly remembered dreams. She felt she walked a hundred miles beneath the dead earth. Time itself seemed to have stopped. Ferro crept up to a wide archway and peered through.

The hall beyond was like a temple, but it would have swallowed whole even the great temple in Shaffa, where thousands called hourly out to God. It dwarfed the lofty dome where Jezal dan Luthar had been given a crown. It was an expanse that made even the vastness of ruined Aulcus seem petty. A place crowded with solemn shadows, peopled with sullen echoes, bounded by angry, unyielding stone. The tomb of long-dead giants.

The grave of forgotten gods.

Yulwei and Bayaz stood at its centre. Tiny, insect figures in an ocean of gleaming darkness. Ferro pressed herself to the cold rock, striving to pick their words out from the sea of echoes.

'Go to the armoury and find some of the Maker's blades. I will go up, and bring . . . that other thing.'

Bayaz turned away, but Yulwei caught him by the arm. 'First answer me one question, brother.'

'What question?'

'The same one I always ask.'

'Again? Even now? Very well, if you must. Ask.'

The two old men stood still for the longest time. Until the last echoes had faded and left only a silence as heavy as lead. Ferro held her breath.

'Did you kill Juvens?' Yulwei's whisper hissed through the darkness. 'Did you kill our master?'

Bayaz did not flinch. 'I made mistakes, long ago. Many mistakes, I know. Some out in the ruined west. Some here, in this place. The day does not pass when I do not regret them. I fought with Khalul. I ignored my master's wisdom. I trespassed in the House of the Maker. I fell in love with his daughter. I was proud, and vain, and rash, all this is true. But I did not kill Juvens.'

'What happened that day?'

The First of the Magi spoke the words as though they were lines long rehearsed. 'Kanedias came to take me. For seducing his daughter. For stealing his secrets. Juvens would not give me up. They fought, I fled. The fury of their battle lit the skies. When I returned, the Maker was gone, and our master was dead. I did not kill Juvens.'

Again a long silence, and Ferro watched, frozen. 'Very well.' Yulwei let fall his hand from Bayaz' arm. 'Mamun lied, then. Khalul lied. We will fight against them together.'

'Good, my old friend, good. I knew that I could trust you, as you can trust me.' Ferro curled her lip. Trust. It was a word that only liars used. A word the truthful had no need of. The First of the Magi's footsteps rang out as he strode towards one of the many archways and vanished into the gloom.

Yulwei watched him go. Then he gave a sharp sigh, and padded off in the other direction, his bangles jingling on his thin arms. The echoes of his passing slowly faded, and Ferro was left alone with the shadows, wrapped in silence.

Slowly, carefully, she crept forwards into that immense emptiness. The floor glittered snaking lines of bright metal, set into the black rock. The ceiling, if there was one, was shrouded in darkness. A high balcony ran around the walls a good twenty strides up, another far above that, then another, and another, vague in the half-light. Above all, a beautiful device hung. Rings of dark metal, great and small, gleaming discs and shining circles, marked with strange writings. All moving. All revolving, one ring about the other, and at their centre a black ball, the one point of perfect stillness.

She turned round, and round, or perhaps she stood still and the room turned about her. She felt dizzy, drunken, breathless. The bare rock soared away into the black, rough stones without mortar, no two alike. Ferro tried to imagine how many stones the tower was made of.

Thousands. Millions.

What had Bayaz said, on the island at the edge of the World? Where does the wise man hide a stone? Among a thousand. Among a million. The rings high above shifted gently. They pulled at her, and the black ball in the centre pulled at her most of all. Like a beckoning hand. Like a voice calling out her name.

She dug her fingers into the dry spaces between the stones and began to climb, hand over hand, up and up. It was easily done. As though the wall was meant to be climbed. Soon she swung her legs over the metal rail of the first balcony. On again, without pausing for breath, up and up. She reached the second balcony, sticky with sweat in the dead air. She reached the third, breath rasping. She gripped the rail of the fourth, and pulled herself over. She stood, staring down.

Far below, at the bottom of a black abyss, the whole Circle of the World lay on the round floor of the hall. A map, the coastlines picked out in shining metal. Level with Ferro, filling almost all the space within the gently curving gallery, suspended on wires no thicker than threads, the great mechanism slowly revolved.

She frowned at the black ball in its centre, her palms tingling. It seemed to hover there, without support. She should have wondered how that could be, but all she could think about was how much she wanted to touch it. Needed to. She had no choice. One of the metal circles drifted close to her, gleaming dully.

Sometimes it is best to seize the moment.

She sprang up onto the rail, crouched there for an instant, gathering herself. She did not think. Thinking would have been madness. She leapt into empty space, limbs flailing. The whole machine wobbled and swayed as she caught hold of its outermost ring. She swung underneath, hanging breathless. Slowly, delicately, her tongue pressed into the roof of her mouth, she pulled herself up by her arms, hooked her legs over the metal and dragged herself along it. Soon it brought her close to a wide disc, scored with grooves, and she clambered from one to the other, body trembling with effort. The cool metal quivered under her weight, twisting and flexing, wobbling with her every movement, threatening to shrug her off into the empty void. Ferro might have had no fear in her.

But plunges of a hundred strides onto the hardest of hard rock still demanded her deep respect.

So she slithered out, from one ring to another, hardly daring even to breathe. She told herself there was no drop. She was only climbing trees, sliding between their branches, the way she had when she was a child, before the Gurkish came. Finally she caught hold of the innermost ring. She clung to it, furious tight, waiting until its own movement brought her close to the centre. She hung down, legs crossed around the frail metal, one hand gripping it, the other reaching out towards that gleaming black ball.

She could see her rigid face reflected in its perfect surface, her clawing hand, swollen and distorted. She strained forward with every nerve, teeth gritted. Closer, and closer yet. All that mattered was to touch it. The very tip of her middle finger brushed against it and, like a bubble bursting, it vanished into empty mist.

Something dropped free, falling, slowly, as if it sank through water. Ferro watched it tumble away from her, a darker spot in the inky darkness, down, and down. It struck the floor with a boom that seemed to shake the very foundations of the Maker's House, filled the hall with crashing echoes. The ring that Ferro clung to trembled and for a giddy instant she nearly lost her grip. When she managed to haul herself back she realised that it had stopped moving.

The whole device was still.

It seemed to take her an age to clamber back across the motionless rings to the topmost gallery, to make the long descent down the towering walls. When she finally dropped to the floor of the cavernous chamber her clothes were torn, her hands, elbows, knees grazed and bloody, but she scarcely noticed. She ran across the wide floor, her footsteps ringing out. Towards the very centre of the hall, where the thing that had fallen from above still lay.

It looked like nothing more than an uneven chunk of dark stone the size of a big fist. But this was no stone, and Ferro knew it. She felt something leaking from it, pouring from it, flooding out in thrilling waves. Something that could not be seen, or touched, and yet filled the whole space to its darkest reaches. Invisible, yet irresistible, it flowed tingling around her and dragged her forwards.

Ferro's heart thumped at her ribs as her footsteps drew close. Her mouth flooded with hungry spit as she knelt beside it. Her breath clawed in her throat as she reached out, palm itching. Her hand closed around its pocked and pitted surface. Very heavy, and very cold, as if it were a chunk of frozen lead. She lifted it slowly up, turning it in her hand, watching it glitter in the darkness, fascinated.

'The Seed.'

Bayaz stood in one of the archways, face trembling with an ugly mixture of horror and delight. 'Leave, Ferro, now! Take it to the palace.' He flinched, raised one arm, as if to shield his eyes from a blinding glare. 'The box is in my chambers. Put it inside, and seal it tight, do you hear me? Seal it tight!'

Ferro turned away, scowling, not sure now which of the archways led out of the Maker's House.

'Wait!' Quai was padding across the floor towards her, his gleaming eyes fixed on her hand. 'Stay!' He showed no trace of fear as he came closer. Only an awful kind of hunger, strange enough that Ferro took a step away. 'It was here. Here, all along.' His face looked pale, slack, full of shadows. 'The Seed.' His white hand crept through the darkness towards her. 'At last. Give it to-'

He crumpled up like discarded paper, was ripped from his feet and flung away the whole width of the vast room in the time it took Ferro to drag in one stunned breath. He hit the wall just below the lowest balcony with an echoing crunch. She watched open-mouthed as his shattered body bounced off and tumbled to the ground, broken limbs flopping.

Bayaz stepped forward, his staff clenched tightly in his fist. The air around his shoulders was still shimmering ever so slightly. Ferro had killed many men, of course, and shed no tears. But the speed of this shocked even her.

'What did you do?' she hissed, the echoes of Quai's fatal impact with the far wall still thudding ahout them.

'What I had to. Get to the palace. Now.' Bayaz stabbed at one of the archways with a heavy finger, and Ferro saw the faintest glimmer of light inside it. 'Put that thing into the box! You cannot imagine how dangerous it is!'

Few people liked taking orders less, but Ferro had no wish to stay in this place. She stuffed the lump of rock down inside her shirt. It felt right there, pressed against her stomach. Cool and comforting, for all Bayaz called it dangerous. She took one step, and as her boot slapped down a grating chuckle floated up from the far side of the hall.

From where Quai's ruined corpse had fallen.

Bayaz did not seem surprised. 'So!' he shouted. 'You show yourself at last! I have suspected for some time that you were not who you appeared to be! Where is my apprentice, and when did you replace him?'

'Months ago.' Quai was still chuckling as he pushed himself slowly up from the polished floor. 'Before you left on your fool's errand to the Old Empire.' There was no blood on his smiling face. Not so much as a graze. 'I sat beside you, at the fire. I watched you while you lay helpless in that cart. I was with you all the way, to the edge of the World and back. Your apprentice stayed here. I left his half-eaten corpse in the bushes for the flies, not twenty strides from where you and the Northman soundly slept.'

'Huh.' Bayaz tossed his staff from one hand to the other. 'I thought I noted a sharp improvement in your skills. You should have killed me then, when you had the chance.'

'Oh, there is time now.' Ferro shivered as she watched Quai stand. The hall seemed to have grown suddenly very cold.

'A hundred words? Perhaps. One word?' Bayaz' lip curled. 'I think not. Which of Khalul's creatures are you? The East Wind? One of those damned twins?'

'I am not one of Khalul's creatures.'

The faintest flicker of doubt passed over Bayaz' face. 'Who, then?'

'We knew each other well, in times long past.'

The First of the Magi frowned. 'Who are you? Speak!'

'Taking forms.' A woman's voice, soft and low. Something was happening to Quai's face as he paced slowly forward. His pale skin drooped, twisted. 'A dread and insidious trick.' His nose, his eyes, his lips began to melt, running off his skull like wax down a candle. 'Do you not remember me, Bayaz?' Another face showed itself beneath, a hard face, white as pale marble. 'You said that you would love me forever.' The air was icy chill. Ferro's breath was smoking before her mouth. 'You promised me that we would never be parted. When I opened my father's gate to you . . .'

'No!' Bayaz took a faltering step back.

'You look surprised. Not as surprised as I was, when instead of taking me in your arms you threw me down from the roof, eh, my love? And why? So that you could keep your secrets? So that you could seem noble?' Quai's long hair had turned white as chalk. It floated now about a woman's face, terribly pale, eyes two bright, black points. Tolomei. The Maker's daughter. A ghost, stepped out of the faded past. A ghost that had walked beside them for months, wearing a stolen shape. Ferro could almost feel her icy breath, cold as death on the air. Her eyes flickered from that pale face to the archway, far away across the floor, caught between wanting to run, and needing to know more.