'Come on,' he coaxed it, 'please.'

His plea bore fruit; on the third attempt the engine caught.

His instinct was to accelerate and get out of Chariot Street as quickly as possible, but the snow, falling as it did on several days' accumulation of ice, made the going treacherous. The wheels repeatedly threatened to lose their grip, the car sliding back and forth across the road. But yard by yard they crept through the pall of snow, which was so heavy now it reduced visibility to a car length. It was only as they approached the end of Chariot Street that the truth came clear. It wasn't just snow that was smothering them. There was a fog thickening the air, so dense that the car headlights had difficulty penetrating it.

Chariot Street was suddenly no longer part of the Kingdom. Though it had been Cal's stamping ground since childhood, it was alien territory now: its landmarks erased, its urbanity turned over to wasteland. It belonged to the Scourge, and they were lost in it. Unable to see any sign of a turning he trusted to instinct and made a right. As he swung the wheel over, de Bono sat bolt upright.

'Go back!' he yelled.

'What?'

'Back! Jesus! Back!'

He was gripping the dashboard with his wounded hands, staring into the fog ahead.

'It's there! There!'

Cal glanced up, as something huge moved in the fog ahead, crossing the path of the car. It came and went too quickly for him to gain more than a fleeting impression: but that was already too much. He'd underestimated it in his dreams. It was vaster than he'd imagined: and darker; and emptier.

He struggled to put the vehicle into reverse, panic making his every motion a farce. Off to his right the fog was folding upon itself, or unfolding. Which direction was the thing going to come from next? or was it somehow everywhere around them, the fog its hatred made matter?

'Calhoun.'

He looked at de Bono, then through the windscreen at the sight that had de Bono rigid in his seat. The fog was dividing in front of them. From its depths the Scourge loomed.

What Cal saw befuddled him. There was not one form emerging from the murk, but two, locked in a grotesque union.

One was Hobart; albeit a Hobart much transfigured by the horror that now possessed him. His flesh was white, and there was blood running from the dozen places around his body where lines of force - connected by wheels and arcs of fire -entered his body and broke out the other side, revolving through him as they swung to meet the second form: the monstrous geometry that towered above him.

What Cal saw in that geometry was all paradox. It was bleached, yet black; a void, yet brimming; perfect in its beauty, yet more profoundly rotten than any living tissue could be. A living citadel of eyes and light, corrupt beyond words, and stinking to high heaven.

De Bono threw himself against the door and began to wrestle with the handle. The door opened, but Cal snatched hold of him before he could pitch himself out, at the same time putting his foot on the accelerator. As he did so a sheet of white flame erupted in front of the car, eclipsing the Scourge.

It was the briefest of respites. The car had backed up only five yards before the Scourge came at it again.

As it came, Hobart opened his mouth to a dislocating width, and a voice that was not his issued from his throat.

'I see you,' it said.

The next moment it seemed the ground beneath the car erupted, and the vehicle was flung over onto the driver's side.

There was total confusion within, as a hail of bric-a-brac tumbled from dashboard and glove compartment. Then de Bono was scrabbling at the passenger door once again, pushing it open. Despite his wounds some of a rope-dancer's agility was still in evidence, for he was out of the felled vehicle in two economical moves.

'Get going!' he yelled to Cal, who was still attempting to work out which way was up. As he stood, and levered himself out of the car, two sights were there to greet him. One, that of de Bono disappearing into the fog, which now seemed charged on every side with an empire of eyes. The other, a figure standing in the midst looking at him. It seemed it was a night for familiar faces, changed by circumstance. First, de Bono; then Hobart; and now - though for an instant Cal refused to believe it - Shadwell.

He'd seen the man play many roles. Avuncular salesman, wreathed in smiles and promises; tormentor and seducer; Prophet of Deliverance. But here was a Shadwell stripped of pretences, and the actor beneath was a vacant thing. His features, robbed of animation, hung on his bones like soiled linen. Only his eyes - which had always been small, but now seemed vestigial - still preserved a trace of fervour.

They watched Cal now, as he scrambled off the car and onto the ice-slick street.

There's nowhere left to run,' he said. His voice was slurred, as though he needed sleep. 'It's going to find you, wherever you try to hide. It's an Angel, Mooney. It has God's eyes.'

'An Angel? That?'

The fog trembled to right and left of them, like living tissue. At any moment it might be back upon them. But the sight of Shadwell, and the riddle of his words, kept Cal glued to the spot. And another puzzle too; something about Shadwell's changed appearance which he couldn't put his finger on.

'It's called Uriel,' Shadwell said. The flame of God. And it's here to bring an end to magic. That's its only purpose. An end to rapture. Once and for all.'

The fog trembled again, but Cal still stared at Shadwell, too intrigued to retreat. It was perverse, to be vexed by trivia when a power of an Angel's magnitude was within spitting distance. But then the Mooneys had always been perverse.

That's my gift to the world,' Shadwell was declaring. 'I'm going to destroy the magicians. Every one. I don't sell any longer you see. I do this for love.'

At this mention of selling, Cal recognized the change in the man. It was sartorial. Shadwell's jacket, the jacket of illusions which had broken Brendan's heart, and doubtless the hearts of countless others, had gone. In its place Shadwell wore a new coat, immaculately tailored but bereft of raptures.

'We're bringing an end to illusions and deceptions. An end to it all -'

As he spoke the fog shuddered, and from it there came a single shriek, which was cut off abruptly. De Bono: living and dying.

' ... you fucker...' Cal said.

'I was deceivedI Shadwell replied, untouched by Cal's hostility. 'So terribly deceived. Seduced by their duplicity; willing to spill blood to have what they tantalized me with -'

'And what are you doing now?' Cal spat back. 'Still spilling blood.'

Shadwell opened his arms. 'I come empty-handed, Calhoun,' he replied. That's my gift. Emptiness.'

'I don't want your damn gifts.'

'Oh you do. In your bones you do. They've seduced you with their circus. But here's an end to that sham.'

There was such sanity in his voice; a politician's sanity, as he sold his flock the wisdom of the bomb. This soulless certainty was more chilling than hysteria or malice.

Cal realized now that his first impression had been mistaken. Shadwell the actor had not disappeared. He'd simply forsaken his patter and his hyperbole for a playing style so plain, so minimal, it scarcely seemed like a performance at all. But it was. This was his triumph: Shadwell the Naked.

The fog had begun to chum with fresh enthusiasm. Uriel was coming back.

Cal took one more look at Shadwell, to fix the mask in his mind once and for all, then he turned and started to run.

He didn't see the Scourge reappear, but he heard the car explode behind him, and felt the blast of heat which turned the snow to a warm drizzle around his head. He heard Shadwell's voice too - carried crisply on the cold air.

'I see you . . . ' he said.

That was a lie; he didn't and he couldn't. The fog was for the moment Cal's ally. He fled through it, not caring much in which direction he went as long as he outpaced the gift-giver's brute.

A house loomed up out of the murk. He didn't recognize it, but he followed the pavement until he reached the first crossroads. The intersection he knew, and took off back towards Chariot Street by a labyrinthine route designed to confuse his pursuers.

Shadwell would guess where he was headed, no doubt; the living fog that concealed the Scourge was probably half way down Chariot Street already. The thought gave speed to Cal's feet. He had to get to the house before the fire. Suzanna's book was there: the book she'd given into his hands for safe-keeping.

Twice the ice underfoot brought him down, twice he hauled himself up again - limbs and lungs aching - and ran on. At the railway bridge he clambered over the wire and up onto the embankment. The fog had thinned out here; there was just the snow, falling on the silent tracks. He could see the backs of the houses clearly enough to count them as he ran, until he reached the fence at the back of his father's house. He clambered over, realizing as he ran past the loft that he had another duty to perform here before he could make his escape. But first, the book.