'Perhaps, though I suspect the drugs the Wise feed their mothers might make some contribution.'

Carnelian considered this. 'Still, they are two in one, just like the Gods.'

Their joining is imperfect, demonstrating all the ways in which a man can be wedded to his reflection in a mirror. Unlike the Twins they are not complementary beings. Even when they are born entirely unjoined, they are merely a reflection of each other.'

They reached a door and passed into another chamber that was mosaiced with clouds of amethyst. His father stopped him there. He turned to him and stooped to hold Carnelian's face in his hands, then kissed him on the forehead. 'Did you think your father had forgotten your birthday?'

'I had forgotten it myself, Father,' Carnelian said in surprise. 'Is it already the thirty-third day of Jalod?' Suth nodded.

They had left the island in the last few days of the ninth month and here they were at the end of the eleventh. Perhaps seventy days in all. Those seventy days seemed a memory of years.

His father smiled at him. 'You are fifteen, a ripe old age.' He straightened up, looking away off into his memory, regaining for a moment something of his familiar beauty. 'I have never told you before that the day of your birth was also the day when the last God Emperor died. Birth during the broken mirror days of an imperial interregnum has momentous astrological implications. The first such day has particular significance. The Wise prophesied that fateful consequences accrued to your birth.' His eyes focused back on his son. 'At least your birthday has come before another such interregnum.' He frowned. 'What are those stains upon your supplication robe?'

Carnelian looked and saw the blood streaks. He looked up at his father and showed him the grazes on his palms. His father grimaced, glancing down his own gold brocades, and made a sign of apology.

There is no pain, Father.'

Suth jerked a nod. 'Come, let us hurry. I cannot afford to be long away from my responsibilities.' 'Where are we going?'

His father's sad face managed a smile. 'You shall see soon enough, my son.'

The echoing apartments grew colder and gloomier. Their wall mosaics became dark shifting nightmares. Everywhere there were doors and more doors, each guarded by its complement of syblings.

'Is it safe, my Lord, to wander thus unmasked?' Carnelian asked his father.

'Here there are no seeing eyes but ours,' Suth replied.

Carnelian longed to reach up and grasp his father's hand, but he was no longer a child.

At last they came to a door beside which a Sapient stood among a brood of homunculi. Their silver faces could have been snatched from sleeping children.

As Carnelian and his father came closer, one of the homunculi moved into the Sapient's cloven embrace.

'Who comes to the door of the Dreamchamber?' it said, eerily, a dead child speaking.

The Regent,' said Suth.

The Sapient reached out and tweaked the necks of the homunculi one by one. Carnelian recoiled as they crept forward feeling for his father with their hands. He watched them pull the crowns one by one from his head, then peel him free of his court robe. He stepped out of it, pale, narrow, like a worm cut from an apple. He climbed down from his ranga and was a man again. He turned and offered his hand. Carnelian could not read the strange, sad expression on his father's face but took it.

The Sapient turned and with his fist stroked the lintel of the door. It rang with a sound like a cymbal and after some moments began to open.

Myrrh misted the chamber. Ferns frothed up from the floor, curling, pushing up a giant sleeping. Sagging down towards them from the ceiling was a huge figure, like a man hanging face down in a hammock of spider's silk. Apple-green jade formed the circular floor that sloped up to the sleeping giant. Sapients squatted around the walls, their bleached skin tight as a drum's, their jet eyes staring, their lipless mouths valving open and closed. A dirge was oozing from them, a grating, grumbling chant that rose and fell as wordless as a wind. Somewhere a bell was being struck with a rhythm slower than Carnelian's breathing.

He followed his father towards the sleeping giant and saw that it was formed of the same jade as the floor. His father released Carnelian's hand. He felt the ceiling pressing down ominously and looked up at its black turmoil. It was like a man stuck to a ceiling with thick tar who gradually, under his weight, was dragging the whole sticky mass down.

Busy with this obsession, Carnelian did not at first register the feeling against his side. Then he gave in to its nagging, its brushing against his leg. He turned to see someone prostrate on the floor. For a moment he thought it one of the Wise who had slipped by him as quietly as a shadow, but when he looked anxiously for the comfort of his father Carnelian found it was him on the ground. Staring at him making the prostration, the hackles rose on Carnelian's neck. He looked up at the jade giant and felt a chill understanding seep into his head.

It was his father's grip on his coarse-weave robe that pulled him down to the floor and then a while later back onto his feet. Together they crept forward and began to climb the sloping jade. Carnelian's heart was louder than the chanting. As his eyes rose higher he saw that the jade giant was a kind of bed and that lying on it was a man, or something shaped like a man, a man whose face was mirror-black obsidian.

'Deus,' said his father, his head bowing. 'I have brought my son at Your bidding.'

Carnelian gaped at the Gods. Horror floated on the chanting of the Sapients. He saw one standing behind the giant's head that was a pillow for They. The Sapient leaned forward so that his fingers were touching the Gods' throat. He saw the thin yellow arm laid out along the giant's arm. Another Sapient, kneeling, had his cloven hands pressing on a vein running down the yellow arm. It looked as if he were preparing to play it like a flute. Yet another of the Wise, who held the wrist, was also striking the heart-stone bell. Carnelian's heart slavishly followed its peal.

'Even now, child, they use Us as an instrument to probe the sky for its Heart of Thunder.'

The voice rumbled from nowhere. Carnelian's eyes searched for its source.

'Later, when We shall dream, they assure Us that they will be able to chart its movement up from the sea.'

The non-singular pronouns registered. Carnelian stared at the Mask's obsidian lips and waited for it to speak again.

The other one, child, waits for a sign of Our dissolution. The moment of Our death will form a crucial part of their astrological calculations,' the Mask said. 'Release Us, Immortality.'

The Grand Sapient's noseless face frowned as he relinquished hold of the Gods' throat.

'Child, are you as mute as they?' the Gods said.

Carnelian swallowed several times, moistened his lips, breathed his voice to life. 'Perhaps… Deus… perhaps You will cheat them.'

The glassy face began a chuckle that came apart into coughing. 'We shall soon be occupying Our jade suit. A column in the Labyrinth gapes ready to receive Us into the second waking.' There was more laboured breathing. 'Sardian, the Mask impedes Our breathing.'

Carnelian watched his father's long fingers reach for the Gods' face.

Suth glanced first at Immortality and then at his son. Close your eyes, he signed.

Carnelian obeyed him, scrunching them closed, preparing himself for the blast of light as the Gods' face was revealed.

Carnelian heard the tempo of the bell increase a little. The tone of the Sapients' chanting changed as they reacted to it. He jumped when a hand touched his face.

'Kiss Their hand as a token of love. As much as They are Lords of Earth and Sky, They are your uncle,' rustled his father in Carnelian's ear.