treasure. He thinks of the way she fed him coffee and listened, the night Scarlet was found. He thinks of her body, actually rather magnificent unclothed, white in the moonlight. He thinks of her at Scarlet's funeral, her eyes red, and of her face when she told him that Erik was the author of the letters. He sighs again, almost a groan. He's not in love with Ruth but somehow she gets to him. If anything happens to her, he will never forgive himself.
Cathbad stops again and Nelson almost bumps into him.
'What's the matter?' He has to shout to be heard above the wind.
'I've lost the path.'
'You're joking!'
Cathbad sweeps the beam of the torch over the ground.
'Some of the posts are submerged…'he mutters. 'I think this is it.'
He takes a step forward and disappears. He doesn't even have time to scream. He just vanishes, swallowed up by the night. Nelson jumps forward and is just in time to catch a handful of cloak. He pulls, the cloak tears, but now he has got hold of Cathbad's arm. Cathbad is up to his neck in the mud and it takes all Nelson's strength to haul him out.
Finally, with a ghastly sucking noise, the marsh relinquishes its prey. Cathbad kneels on the path, head down, panting.
He is completely covered in mud, his cloak in tatters.
Nelson yanks him to his feet. 'Come on, Cathbad, you're not dead yet.' It is the first time he has called Malone by his adopted name, but neither of them notices this.
Cathbad grasps Nelson's arm, his eyes look white and wild in his blackened face. 'I am in your debt,' he says, fighting for breath. 'The spirits of the ancestors are strong, they are all about us.'
'Well, we're not about to join them yet,' Nelson tells him briskly. 'Where's that torch?'
Ruth and Lucy stare at each other, terrified. The footsteps are coming nearer. Ruth's mind works frantically. They are trapped, they can't leave the hide without Erik catching them. Unconsciously Ruth moves in front of Lucy. Will Erik attack them both? How can she defend herself, defend Lucy? She looks wildly around the hide but it is completely empty. If only she had a stone or a piece of wood. Where is the stone that Lucy was carrying?
The footsteps come nearer and, at the same moment, the moon slides out from behind the clouds. A man's figure approaches, wearing yellow waterproofs. Hang on, wasn't Erik in black? The man reaches the steps to the hide and, in the moonlight, Ruth sees his face.
It isn't Erik. It is David.
'David!' shouts Ruth. 'Thank God!' David has come to save her again. David, who knows every step of the marshes. David who, she realises, is the only person who really loves the place. She feels giddy with relief.
But, behind her, Lucy starts to scream.
Nelson hears the scream. He grabs Cathbad's arm.
'Where did that come from?'
Cathbad points over to the right. 'From over there,' he says vaguely.
'Come on.' Nelson sets out, running, staggering over the waterlogged ground.
'No!' shouts Cathbad. 'You're off the path.
But Nelson keeps running.
Lucy screams and, in that second, Ruth understands everything.
'You!'
She stares at David. 'It was you.'
David looks calmly back at her. He looks no different from the kind, diffident, slightly eccentric David she thought she knew. Christ, she had even, for a minute or two, almost fancied him.
'Yes,' he says. "Me.'
'You killed Scarlet? You kept Lucy a prisoner here for all these years?'
David's face clouds. 'I didn't mean to kill Scarlet. I brought her as company for Lucy. Lucy was growing up. I wanted a younger one. But she struggled. I tried to make her be quiet and… she died. I didn't mean to do it. I buried her in the sacred place. Erik told me it was the right thing to do.'
'Erik? So he knew about this?'
David shakes his head. 'He didn't know but he talked to me, all those years ago, about burial places and sacrifices.
He told me that in prehistoric times they buried children on the marshland, as an offering to the Gods. So I buried Scarlet where the wooden circle used to be. But you dug her up again.' His face darkens.
'You killed my cat,' bursts out Ruth. She knows she shouldn't mention Sparky, she shouldn't be antagonising David, but she can't help herself.
'Yes. I hate cats. They kill birds.'
He takes a step closer. Ruth grabs hold of Lucy, who is shaking violently.
'Keep away from her.'
'Oh, I can't let you go now,' says David, in a sweet, reasonable voice. 'She'd never survive in the wild. She's been in captivity too long. I'll have to kill you both.'
And then Ruth sees that he is holding a knife, a very serious-looking knife. The moonlight gleams on the jagged blade.
'Run!' she yells and, dragging Lucy after her, she sprints past David and into the night.
CHAPTER 30
Holding Lucy's hand tightly, Ruth runs. She doesn't know where she is going, she doesn't give a thought to the tide or the marshes, she hardly notices the wind and the rain, all she knows is that they are running for their lives. A murderer is after them, a man who has killed once before and who is intent on silencing them. Beside her, Lucy runs surprisingly well, hardly making a sound. Ruth hangs grimly onto her hand. She mustn't let Lucy go. Alone, in the dark, on the tidal marsh, she would have no chance at all.
Ruth can hear David behind them. He is wading through the stream they have just crossed. She must change direction, head for home. But where is home? She makes a random left turn and finds herself facing a pool of water. She runs on and finds the ground getting softer and softer. Oh God, she must be on the mudflats. She has a sudden vision of Peter, ten years ago, calling for help as the tide advanced. Erik had saved him but he is not going to save Ruth.
And then she hears something. Almost as if Erik's voice is coming back to her, over the years. She stops, listening.
It sounds almost like 'Police'. She must be hallucinating.
But it was a mistake to stop. With horrifying suddenness, David's face suddenly looms out of the dark. Ruth screams and Lucy breaks free.
'Lucy!' yells Ruth.
David lunges forward, grabbing Ruth's foot. She kicks out. He falls back. Ruth takes to her heels again; she must find Lucy before David does.
But David is right behind her. She can hear his ragged breathing; hear the splashing as he wades through the pool. Frantically, Ruth turns and finds herself scrambling up a sandy slope. A sand dune. She must be right near the sea but she barely has time to think this when she is falling down the other side of the dune and landing in water. Salt water. Looking ahead, she can see nothingness. Only the ink-black sea, flecked with white foam, coming relentlessly towards her. She turns and wades inland, along a narrow channel of water. Where's Lucy? She must find Lucy.
Ahead of her, she can see a square dark shape in the water. She heads for it and sees what it is. A Second World War pill box, a small brick structure about a metre high.
They are dotted all over the marshes. For want of anything better to do, she climbs on top of the box. If she jumps, she can reach the higher ground, where she should be safe from the tide. She jumps and lands heavily on the opposite bank. A brief thrill of elation runs through her. She has done it! Super Ruth!
But then the elation vanishes. Standing over her, knife in hand, is David.
Nelson runs across the salt marsh. He hardly notices that he falls many times, staggering in and out of the water.
Behind him he can hear Cathbad shouting something about the tide but he ignores him. Someone is screaming.
Ruth is in danger.
'Police!' he yells. 'Freeze!'
He hasn't even got a gun, what's he going to do when he gets there? He doesn't think about that, just runs doggedly on.
And then he sees the solid shape of the hide, looming up out of the featureless darkness. He runs towards it.
The hide is deserted, eerie in the moonlight. Nelson climbs the steps and looks down into the dark hole left by the trapdoor. Thank God he took the torch from Cathbad.