Rebus was given tea, and some of yesterday's batch of fruit scones, with fresh butter and thick strawberry jam.

'Ever thought about doing B amp;B, Mrs Corbie?'

'Me? I wouldn't have the patience.' She was wiping her hands on her white cotton apron. She seemed always to be wiping her hands. 'Mind you, it's not for shortage of space. My husband passed away last year, so now there's just Alec and me.'

'What? Running the whole farm?'

She made a face. 'Running it down would be more like it. Alec just isn't interested. It's a sin, but there you are. We've got a couple of workers, but when they see he's not interested, they can't see why they should be. We'd be as well selling up. That's what Alec would like. Maybe that's the only thing that stops me from doing it…' She was looking at her hands. Then she slapped them against her thighs. 'Goodness, would you listen to me! Now, Inspector, what was it you wanted?'

After all his years on the force, Rebus reckoned that at last he was in the presence of someone with a genuinely clear conscience. It didn't usually take so long for people to ask what a policeman was after. When it did take so long, the person either knew already what was wanted, or else had absolutely nothing to fear or to hide. So Rebus asked his question.

'I notice you keep the telephone kiosk sparkling, Mrs Corbie. I was wondering if you'd noticed anything suspicious recently? I mean, anything up at the box?'

'Oh, well, let me think.' She placed the flat of one hand against her cheek. 'I can't say… what sort of thing exactly, Inspector?'

Rebus couldn't look her in the eye – for he knew that she had started to lie to him.

'A woman perhaps. Making a telephone call. Something left in the box… a note or a telephone number… anything at all.'

'No, no, nothing in the box.'

His voice hardened a little. 'Well, outside the box then, Mrs Corbie. I'm thinking specifically of a week ago, last Wednesday or maybe the Tuesday…?'

She was shaking her head. 'Have another scone, Inspector.'

He did, and chewed slowly, in silence. Mrs Corbie looked to be doing some thinking. She got up and checked in her oven. Then she poured the last of the tea from the pot, and returned to her seat, studying her hands again, laying them against her lap for inspection.

But she didn't say anything. So Rebus did.

'You were here last Wednesday?'

She nodded. 'But not the Tuesday. I go to my sister's on a Tuesday. I was here all day Wednesday though.'

'What about your son?'

She shrugged. 'He might have been here. Or maybe he was in Dufftown. He spends a lot of time off gallivanting…'

'He's not here just now?'

'No, he's gone to town.',

'Which town?'

'He didn't say. Just said he was off…'

Rebus stood up and went to the kitchen window. It faced on to the yard, where chickens now pecked at Rebus's tyres. One of them was sitting on the bonnet of the car.

'Is it possible to see the kiosk from the house, Mrs Corbie?'

'Eh… yes, from the sitting room. But we don't spend much time in there. That is, I don't. I prefer here in the kitchen.'

'Could I take a look?'

Well, it was clear enough who did spend time in the living room. There was a direct line between sofa, coffee table and television set. The coffee table was marked with rings made by too many hot mugs. On the floor by the sofa there was an ashtray and the remains of a huge bag of crisps. Three empty beer cans lay on their sides beneath the coffee table. Mrs Corbie tut-tutted and went to work, lifting the cans. Rebus went to the window and peered out.

He could make out the kiosk in the distance, but only just. It was possible Alec Corbie might have seen something. Possible, but doubtful. Not worth sticking around for. He'd let DS Knox come and ask Corbie the questions.

'Well,' he said, 'thanks for your help, Mrs Corbie.'

'Oh.' Her relief was palpable. 'Right you are, Inspector. I'll see you out.'

But Rebus knew he had one last bet worth laying. He stood with Mrs Corbie in the yard and looked around him.

'I used to love farms when I was a lad. A pal of mine lived on one,' he glibly lied. 'I used to go up there every evening after tea. It was great.' He turned his wide-eyed nostalgic smile towards her. 'Mind if I take a wander round?'

'Oh.' No relief now; rather, sheer terror. Which didn't stop Rebus. No, it pushed him on. So that before she knew it, he was walking up to the hutches and sties, looking in, moving on. On past the chickens and the roused ducks, into the barn. Straw underfoot and a strong smell of cattle. Concrete cubicles, coiled hosepipes, and a leaking tap. There were pools of water underfoot. One sick-looking cow blinked slowly at him from its enclosure. But the livestock wasn't his concern. The tarpaulin in the corner was.

'What's under here, Mrs Corbie?'

'That's Alec's property' she shrieked. 'Don't touch it! It's nothing, to do with -'

But he'd already yanked the tarpaulin off. What was he expecting to find? Something… nothing. What he did find was a black BMW 3-series bearing Elizabeth Jack's registration. It was Rebus's turn to tut-tut, but only after he'd sucked in his breath and held back a whoop of delight.

'Dear me, Mrs Corbie,' he said. 'This is just the very car I've been looking for.'

But Mrs Corbie wasn't listening. 'He's a good laddie, he doesn't mean any harm. I don't know what I'd do without him.' And so on. While Rebus circled the car, looking but not touching. Lucky the forensics team was on its way. They'd be kept busy…

Wait, what was that? On the back seat. A huddled shape. He peered in through the tinted glass.

'Expect the unexpected, John,' he muttered to himself.

It was a microwave.

Rebus telephoned Edinburgh to make his report and request an extra day's stay up north. Lauderdale sounded so impressed that the car had been found that Rebus forgot to tell him about the break-in at the lodge. Then, once Alec Corbie had arrived home (drunk and in charge of a vehicle -but let that pass), he'd been arrested and taken to Dufftown. Rebus seemed to be stretching the local police like they'd never been stretched before, so that Detective Sergeant Knox had to be diverted from the lodge and brought to the farm instead. He looked like an older brother of Constable Moffat, or perhaps a close cousin.

'I want forensics to go over that car,' Rebus told him. 'Priority, the lodge can wait.'

Knox rubbed his chin. 'It'll take a tow-truck.'

'A trailer would be better.'

I'll see what I can do. Where will you want it taken?'

'Anywhere secure and with a roof.'

'The police garage?'

'It'll do.'

'What exactly are we looking for?'

'Christ knows.'

Rebus went back into the kitchen, where Mrs Corbie was sitting at the table studying an array of burnt cakes. He opened his mouth to speak, but kept his silence. She was an accessory, of course. She'd lied to him to protect her son. Well, they had the son now, and he was the one that mattered. As quietly as he could, Rebus left the farmhouse and started his car, staring through the windscreen at his bonnet, where one of the chickens had left him a little gift…

He was able to avail himself of Dufftown police station for the interview with Alec Corbie.

'You're in keech up to your chin, son. Start at the beginning and leave nothing out.'

Rebus and Corbie, seated across the table from one another, were smoking, DS Knox, resting against the wall behind Rebus, was not. Corbie had prepared an extremely thin veneer of macho indifference, which Rebus was quick to wipe off.

'This is a murder investigation. The victim's car has been found in your barn. It'll be dusted for prints, and if we find yours I'm going to have to charge you with murder. Anything you think you know that might help your case, you'd better talk.'