Harry tucked her into his side and stroked her arm.

'I do,' he said. 'I do promise you, Kaz. I promise you anything you want.'

A few moments later, he felt her body relax, as she slept.

Forty-one.

'GUV? GOT A ma.s.sive file. I'll bring it down myself. Set off at crack tomorrow morning, be with you by twelve.'

'You can't do that on a Sunday, that's your day with the family.'

'Em don't mind, I asked her not if it's for you. And she's meeting up with her best friend . . . she's got twin boys same age as Josh it'll be bedlam. Shall I come to the station?'

'Certainly not. I'll buy you lunch and that pint. Let's go to the Oak at Up Starly.'

'Ah, happy days. That'll bring back a few memories.'

'I'll be there from twelve thirty if you're earlier give me a bell. I'll book us in for their famous Sunday roast.'

They arrived together in the pub car park. Nathan handed over a thick file and an envelope containing a CD before they went inside, to pints of the Oak's local bitter, Starly Brewery's Old Man of Wern, and roast beef cut from the joint.

Looking at his former sergeant across the table, Simon saw small changes in him, a greater air of authority to go with his DCI rank. But, in general, Nathan was still Nathan, cheerful, optimistic, open-faced and sparky.

They went through family and police talk until the cheeseboard and two more pints were on the table, when Simon pointed to the file beside him.

'I appreciate this, Nathan not just the file but you bringing it down. I need every thread of inquiry for the team to follow up, but there's been precious little once we let our single suspect go. You know, I'd have put money on him being our man and going down for life.'

'Interesting that. You've got one bloke who did three murders, sure as G.o.d made little apples, got arrested, got charged and got acquitted. And you might've had another bloke who didn't do two murders, got arrested, got charged, got convicted. Wrong both times. And that don't happen too often.'

Simon shook his head. 'We'd never have got the CPS to agree about Williams plenty of evidence and all of it circ.u.mstantial. It'd never have stuck. So, tell me about this one.'

Nathan filled him in about Alan Keyes, with more detail than he had gone into on the phone the previous night.

'He was guilty as h.e.l.l, you've only got to read it. Told you about my old sergeant he remembers it all now. Said there was an outcry like you've never known whole county was in an uproar. Couldn't believe it. He'll have gone somewhere miles away, for sure. There was relatives and friends and neighbours of three dead women swearing vengeance someone would have had him. They smuggled him off somewhere for his own safety. That's the last anyone knew. Anyway, wherever he went, his MO was all his own. There was the same style of electric flex every time yellow and green.'

'For earth . . .'

'Yup. And there was the planting them in front of the mirrors. Sick that is. I mean, yeah, it's all sick. And something else . . .'

'Right. And with ours too. But you first.'

'He cut their toenails with clippers. All of them. Left the clippers behind, but always wiped clean as clean, not a trace of a print anywhere.'

'But he took the nail clippings with him. No trace, not a fragment, on the carpets, in the bins . . . anywhere.'

Nathan had a large chunk of Wensleydale cheese raised to his mouth. Now, he lowered it back to his plate. 'Gawd almighty.'

'It's got to be the same,' Serrailler said.

'Too right it has.'

Simon downed the rest of his beer. Then he remembered what the case had erased from his mind.

'Give me a bit of advice, Nathan?'

'You're jokin' learned all I know from you.'

'Until you went up north and forgot it again. Listen . . . goes no further, not even to Em, all right?'

Nathan nodded, his mouth full of cheese. This was a man Serrailler knew he could trust with his life, let alone with any confidential info he gave him.

'The Chief's retiring.'

Nathan raised his eyebrows.

'This autumn. And she suggested I apply.'

'Go on.' His voice was cautious.

'So . . . I want to know if you think I should.'

'You don't need me.'

'I'm asking you. I value your opinion and you know me as well as anyone.'

'Right. Well then, first off, do you want it? Really want it. If your heart jumped and you thought "job of my dreams" go for it. Nice though, getting asked like that.'

'It's not in her gift . . . she was just suggesting she'd approve.'

'Come on, more than that, guv.'

'I wish you'd stop calling me guv.'

'Can't. She means you'd be the best at it, best successor she could want, all that.'

'Yes. Very flattering.'

'Chief's not an oiler. No need to be.'

'That's true.'

'So?'

Simon leaned back. The dining room was full but they were in a quiet corner and he saw no one he recognised, and certainly no one from the station. He could talk freely, as ever, to Nathan.

'I just don't know. When she said it, that did happen I did think, "Crikey! Wow, yes please." For a second or two. But then this case took it clean out of my head and it stayed there until just now actually. I hadn't given it another thought. But relaxing over this it came back to me. You know me, Nathan. You know this nick. You know this force pretty well it hasn't changed much since you went, not essentially. You know what the job is all about.'

Nathan looked at him. 'Yeah, I do know you, I reckon. I know you and the job. And I know pretty well what a Chief's for. So I'll tell you. Don't touch it. Come on, guv, you're not an admin, big-picture, strategy copper. You're a hands-on, off-beam tec. Always have been DCI, DCS, whatever, you're the same. You get your hands dirty, you don't pull rank, 'cept when a.r.s.es need kickin'. You don't break the rules but you don't treat them with kid gloves. You get results. You lead a great team on a case. n.o.body better. Chief Constable? Not saying you couldn't do it. Course you could do it. But you'd 'ate it. You'd 'ate it from day one and there'd be no going back into CID and your old desk. Right, I've said it.'

Forty-two.

SERRAILLER'S PHONE RANG on the way in to the station. He listened. Exploded.

'Right, I've had enough. I'm going to talk to him. Not you, not anyone else from CID or uniform, I'm going. Get this sorted. Anything else?'

'Matt Williams, guv. Seen today's papers?'

Simon groaned.

'Can't get a job any more cos one of the guys he worked with on the bungalows had a bit of an argument with him, hates his guts, told a reporter Matt was a psycho, bit of a weird one, blah-blah. The media blew it up, had a photo of him looking like someone out of a locked ward. Press office are doing their nut. He's demanding compensation.'

'Of course he is. And how many millions is a subcontract sparks worth? Leave it to the press office, they're good at their job, and he's on a hiding to nothing anyway we had every reason to arrest and charge him. It's one more d.a.m.n thing getting in the way, but not worth worrying about. Right, if anyone wants to know where I am, you've no idea.'

'The Chief's already asked.'

'You've still no idea.'

The DS sighed. 'Guv.'

The temperature was still only hovering around zero but the sky was cloudless, a bright sparkling blue. Lafferton looked as if it had been rinsed clean, the cathedral tower standing out in 3D against the clear sky. Simon parked his car at the top of Metal Street and walked down towards the ca.n.a.l, which ran darkly gleaming beside the towpath. There had been talk for years of clearing up the old warehouses down here and, once, a start had been made, when the Old Ribbon Factory was converted into expensive apartments. But the developer had run out of money, there were engineering problems to do with the site, the conservationists and the Friends of the Ca.n.a.l had organised themselves vigorously and, finally, they had begun to clear downstream for a proposed future reopening of the waterway to ca.n.a.l boats. The old warehouses and sheds stayed as they were, some collapsing in on themselves gently as the weather worked on their fabric, others still in fair condition.

Simon went over the bridge and along the towpath. The willows had been pollarded the previous year and looked bald and stumpy but the whole area served as a lung to the town. The field beyond had a couple of gypsy horses grazing, with an old trailer full of hay nearby. Two women were walking briskly across, their dogs racing and running in circles.

He had meant to come down here and draw the old warehouses before it was too late. Which it would be one of these days when there was money about. Councils liked tidying up. He would come when it was warmer.

n.o.bby Parks's shack was fifty yards ahead. There was no sign of life but as he got nearer Simon could smell the faint fumes of paraffin from his ancient stove. The door was made of flimsy wooden fencing and there was a broken padlock hanging from the handle. n.o.bby wasn't troubled by the idea of intruders.

He banged on the door, then on the wood panel beside it. Silence. He banged again and there was a muttering and swearing from inside. Serrailler pushed open the door and the paraffin fumes came at him more strongly.

'You'll set fire to yourself one of these days, n.o.bby.'

His eyes grew used to the dimness and he made out the rickety table, bench, wicker chair, and the bed in the corner, piled high with blankets, quilts and old sweaters. n.o.bby was struggling out of it, wearing another of the sweaters, with long johns and a cap.

'Morning,' Simon said. 'Sorry it's early for you. Got a kettle and some tea bags?'

'All right, all right. Give me a chance. What you doing down here? Thought you was too high and mighty to come bothering innocent members of the public.'

But his tone was not unfriendly. Simon went back more than fifteen years with n.o.bby Parks, from his first days in the force as a DC.

He looked around. The place was more crammed with junk than ever, inside and out, stuff n.o.bby took from skips and tips and bins, ditches and waste ground. Never from people.

'For heaven's sake, what do you want with a bag of old golf b.a.l.l.s?'

'Come in handy. Never know.'

'And all these roof tiles?'

'Could sell those. Old tiles fetch a bob or two.'

'Not when they're broken they don't. OK, well, just don't go climbing on church roofs nicking lead or I'll have you.'

The tin kettle whistled sulkily on the stove. n.o.bby got down two mugs and rinsed them in a bucket of water, found tea bags from a tin. The milk was out on the window ledge.

'Don't need any fridges, see? b.u.t.ter as well. Bacon. Bit of cheese. All lives out there.'

'What do you do when it's hot?'

'Suffer. Help yourself. Got no sugar, sorry about that.'

'I don't take it. Thanks, n.o.bby.'

'This is about the other business, isn't it? Them poor women.'

'It is.'

'You got no need to take me into your station again, there's nothing else I can say. Said everything.'

'Where did you get that reel of electrical flex, n.o.bby?'

'Skip at the back of the bungalows. It was a disgrace what they threw out when they'd done enough paint to do a lot of walls, enough wood to make a few window frames. Look nails, screws, cabling. All just thrown out and wasted. Do you blame me?'

'No, I don't, and if you can get a bob or two for it I'm not looking. It's not that and you know it, n.o.bby.'

'You don't want me out at night. Only I've been out at night for years. You know that. I like it at night. You see this, you see that. You get the run of the place.'

'That's all right, n.o.bby and you were in the right place at the right time when you saw that ram raid in the Lanes.'

'Ah, you see . . .'

'I don't want to stop you doing what you want. I'm not bothered where you go when, and it's your problem if the patrols pick you up.'

'Always shoving me in their car and giving me a lift home, think they're doing me a favour.'