'Blanchard's here!'

'How ?'

'Doesn't matter.' Ellie was pulling on her clothes. The stink of mud and sweat that she'd so gratefully scrubbed off in the shower closed around her again. Doug jumped out of bed and started getting dressed.

'How would she have known to call Blanchard?'

'You can ask him yourself if we don't get out now.'

Ellie checked their window. At the back of the house, all was still long lawns and box hedges bathed in moonlight. Below her, the wall was sheer and bright, unbroken by any drainpipe or decoration.

'Can we jump?'

Ellie shook her head. 'We might not break our necks, but we wouldn't be able to walk away.'

She grabbed the backpack and slipped out on to the landing. A light had come on at the bottom of the stairs. Low voices drifted up from the hallway; shadows swayed on the flagstones, though the staircase hid the people who made them.

Doug joined her. Three floors down, Ellie heard a stair creak.

'We're trapped.'

A bleak desolation overwhelmed her. To have come so far, only to be caught so easily. She should have known it would end like this.

But Doug was hurrying down the landing, checking the doors. Ellie followed after him.

'We can't hide,' she hissed. 'If we're not in our room, they'll tear the place down.' The footsteps had reached the first floor the awkward sound of big men trying to tread softly.

'A house this big must have had back stairs for servants.'

Doug reached the end of the corridor and felt around on the wall. It was painted white and panelled, indistinguishable from the other walls.

'There's a hole here under the moulding.' He stuck in a finger. With a click and a squeak, the wall swung in.

'Et voila.'

Doug's phone had a torch built in. He turned it on and held it forward. In the diode glow, Ellie saw a spiral staircase dropping away, too steep for the light to make much impact. She pulled the door shut behind her and followed after Doug, chasing the phone's...o...b..of light as it spiralled down. Generations of servants had worn the stone smooth: when she glanced back, she slipped and almost pitched head first down the stairs. Doug caught her and put his finger to her lips.

'Careful.'

Ellie listened. She could hear voices again below them, around the corner, too m.u.f.fled to be in the stairwell. As they crept down, a bar of light appeared in front of them, pouring in through a round hole in the wall.

'It must be the latch for another entrance.'

Ellie knelt and put her eye to the hole. She was looking into the drawing room where they'd sat earlier. The fire had gone out, but all the lights were on. Annelise Stirt stood beside the fireplace clutching a brandy gla.s.s, looking at someone Ellie couldn't see.

'Twenty-five years since he showed it to me, and I still remember it like yesterday,' Annelise said. 'And I never lost your number. Just in case'

'Very fortunate.' Blanchard's voice, cool and unshakeable as ever. Ellie's mouth was dry as salt. 'Mr Spencer will be delighted to have it back.'

Annelise took a sip of her brandy. Her movements were s.n.a.t.c.hed; the gla.s.s banged on the mantel when she put it down.

'You don't know how much I've wanted to see it again. Ever since Mr Spencer invited me to his chateau, I've been like a latter-day Sir Perceval. I spent a night in a castle and saw wondrous things, and ever since I've been trying to get back to it. Of course, I never breathed a word.'

'If you had '

Shouts echoed through the house: through the hole in the door, and down the stair-shaft as well, so they seemed to come from all around. A thump echoed down to them. Someone was pounding on the door above.

Doug pulled Ellie to her feet.

'They know we've gone.'

More pounding. Ellie heard a creak, then a crash and angry shouts. She looked around. They were on the ground floor, but the stairs didn't end. There must be a bas.e.m.e.nt. She didn't dare go into the drawing room with Blanchard there. They carried on down.

The light from Doug's phone stopped in front of an old door, thick timbers studded with nails and banded with iron bars. It wasn't locked they pushed through. On the far side, they found a pair of heavy bolts. Doug slammed the door and shot them home.

'That should hold them for a while.'

'Where are we?'

Doug swung the light around, giving glimpses of brick vaults and cavernous s.p.a.ces. A few dusty barrels sat in the shadows.

'These would have been the old champagne cellars. The chateau must have had a vineyard attached to it at one stage.'

'So where now?'

Doug shone the light around the room again, more slowly this time. 'Champagne ferments in huge barrels. There's no way they ever got them through the servants' entrance.'

Footsteps descended to the far side of the door and stopped. Ellie gazed at the bolts and wondered how long they'd hold.

'Are you in there, Ellie?'

Blanchard's voice. The sound of it was like a spell, gripping her throat so she couldn't speak.

'You're trapped, Ellie. Open the door.'

He waited.

'I always knew you were special, Ellie. You've done better than anyone in eight hundred years. You've led us quite a chase. But it's over now. You have some things that belong to us. Give them back, and we will have no hard feelings.'

Behind her, Doug was rummaging in a corner. Ellie still couldn't speak. Blanchard began to sound irritated.

'And you, Douglas Cullum. Did you come to rescue your friend? How chivalrous of you especially considering how she treated you.' A dry laugh. 'Perhaps she did not tell you? She betrayed you. She gave herself to me completely. You were nothing to her until she discovered she had a use for you.'

Ellie felt as if she were made of gla.s.s, as if a hammer blow had just shattered her into a million pieces. She glanced over her shoulder. Doug had half-vanished into a recess between two pillars, struggling with something in the wall.

'My patience is not infinite, Ellie. Open the door.'

She heard some noises she couldn't decipher a shuffling, a murmur, a click. What ?

An almighty explosion detonated through the cellar, echoing off the vaults until Ellie thought her head would crush in. The door shook: dust billowed off it like an old carpet. But it didn't give.

Someone grabbed her from behind. She screamed, though with her ears still ringing from the blast she barely heard it. It was Doug, grim-faced. He was saying something, but the words wouldn't register. He dragged her to the recess in the wall, where a wide low door stood open. Another blast shivered the door Doug mouthed something that looked like 'shotgun'.

He led her down a low, stone-walled tunnel that ended in a wooden ladder and a trapdoor. An open padlock had been hooked through the hasp: Doug pulled it off and pushed the trap door open.

They'd come up in one of the outbuildings. Through a window in the back wall, Ellie could see the chateau standing tall and proud about twenty yards away. The building must have once been part of the winery: now it was a garage. A green Land Rover filled the room, and the walls were loaded with gardening tools. A set of car keys on a champagne-cork key ring hung from a hook. Doug threw them to Ellie.

'You drive.'

'Where are you going?'

'Just be ready.'

Doug took a rusted sledgehammer from one of the shelves. The look on his face was so fierce she was relieved when he hurried outside with it. Ellie climbed in the Land Rover and started the engine.

For a few moments the night was unutterably still. Ellie sat there in the dark, shaking so hard she wondered if she'd be able to drive. She looked at the backpack on the back seat, scuffed and muddy from their ordeals. She thought about throwing it out of the car, leaving it for Blanchard and just running away, somewhere they'd never be found.

The sound of smashing gla.s.s broke the silence. A second later, Doug came haring into the garage. He threw himself into the pa.s.senger seat, gasping for breath.

'Drive!'

Ellie jammed her foot on the accelerator, The garage doors weren't quite open she clipped them as she went out, spun on the gravel and careered down the driveway. The rear-view mirror lit up as floodlights came on outside the chateau. She glimpsed movement, figures running to the cars. To her horror, the cars started moving.

'I thought you broke them.'

'I smashed the headlights. They can't chase us far if they can't see where they're going.'

The gates loomed ahead, and the road beyond.

'Which way?'

'Whichever.'

She reached the road and turned right. She accelerated so fast she didn't have time to look back.

Destrier skidded the Mercedes through the gates and stopped. He wouldn't get far on those country roads without headlights. He leaped out of the car and ran round to the boot. From a canvas bag he took a long rifle with a telescopic sight. He steadied it on the roof of the car and aimed. The speeding Land Rover zoomed into focus, tail lights heading towards a stand of trees. The high-beams threw up a curtain of light in front of it so he had a clear silhouette of the driver.

His finger tightened on the trigger.

XLVIII.

Wiltshire, England, 1143 At least there's no body.

Hugh says, 'They're keeping it somewhere safe. They'll take the King and use it there.' He doesn't say what it is.

The sentries get called in and questioned. Everyone's seen something, even if he's just made it up to please the Queen. Precious hours go by while we sift the facts from the lies. Scouts ride out in every direction. All they know is that they're looking for a one-eyed mercer the Queen won't let anyone know the truth.

'You can imagine the value the Empress will get out of his plight if it comes out he was kidnapped by a merchant.'

What she means is that half of England no longer believes Stephen's the legitimate king. If word of this gets about, he'll be finished. If we get him back alive.

Servants bring logs: the fire burns all night. The Queen and Bishop Henry sit up in the Queen's apartment, while Hugh and William stride around the manor fetching men, provisions and arms. I loiter by a tapestry and don't get noticed. A company of knights is a.s.sembled in the courtyard, but there's light in the sky and they still don't know which way to go.

Just before dawn, one of the scouts gallops into the courtyard. He's found a herdsman on the Monmouth Road who saw six men riding quickly towards Wales. Three rode abreast, one wrapped in a hooded cloak held between the others. He remembers the man at their head, a giant of a man in black armour, mounted on an enormous black charger.

It's enough for William. We clamber into our saddles and ride out.

We can't go in force we'd move too slowly, and alert the King's enemies that something was wrong. William's chosen thirty knights, together with Beric, Anselm, Hugh and me. I think about this weapon Malegant has, that he intends to use on the King, and wonder if we're enough.

The roads are almost empty. Whoever's abroad, they hear our band of knights, swords flashing, armour jangling, and a.s.sume the worst. Everywhere we go, the hedgerows shiver and the trees whisper with the echo of just-vanished voices.

Early afternoon brings us to a river, so wide even an arrow couldn't get across. We're near the sea: curlews pick at worms in the sand, and rank smells drift up off strands of weed. It looks so foreign that when Hugh says the name I can hardly credit it. The Severn. The last time I saw this, I was a ten-year-old orphan on my way to Hautfort. And I was in a boat.

'They can't have crossed here.' William circles his horse on the riverbank. There's no way a horse could swim it. There are mooring posts for a ferry, but the only boat is a waterlogged hulk, almost submerged.

Anselm points to the hull. There are holes in the bow, the axe-marks still visible. It wasn't done today: the splintered wood has rotted black.

'Someone doesn't want us crossing.'

We ride along the sh.o.r.e, until we come to a large boulder blocking our path. We splash into the shallows, and as we come around it we see a boat with two men aboard floating a little way off. We pause, waiting for the current to bring them towards us, but they stay perfectly still. They're anch.o.r.ed fast. At the front of the boat a man baits a fishing line with a minnow and casts it into the river.

Hugh rides out as far as he dares and hails them. 'Is there a ford or a bridge across this river?'

The fisherman frowns and puts down his line. Hugh's frightened the fish.

'Nothing.'

'A boat?'

'None bigger than this one.' He eyes the knights gathered on the foresh.o.r.e. 'There's no way to get a horse across for twenty leagues.'

'Have you seen another group of knights come this way? Five men and a prisoner?'

'They came through this morning.'

'Did they cross?'

'Not here.'He extends an arm, pointing upstream. 'That way.'

The river shrinks as we follow it. The tide's going out: long sandbars surface in the water. Hugh keeps glancing at the river I can see he's tempted. But the sandbars have their own hazards: they push the water into narrow channels, where it flows fast and deep.

Eventually, Hugh calls William to halt. 'We can cross here.'

William shakes his head. 'It's too dangerous.'

'So's delay.'

The bank on the far side is almost sheer where the river's carved away the sand. But the channel looks narrow I'm sure I've jumped wider before.