He leaned forward, as if to impart a secret. 'Let me give you Caroline Rattray's phone number.’

'Bugger off,' said Rebus.

That evening, a marked patrol car picked him up from Patience's Oxford Terrace flat. The driver was a Detective Constable called Robert Burns, and Burns was doing Rebus a favour.

'I appreciate it,' said Rebus.

Though Burns was attached to C Division in the west end, he'd been born and raised in Pilmuir, and still had friends and enemies there. He was a known quantity in the Gar-B, which was what mattered to Rebus.

'I was born in one of the pre-fabs,' Burns explained. 'Before they levelled them to make way for the high-rises. The high-rises were supposed to more "civilised", if you can believe that. Bloody architects and town planners. You never find one admitting he made a mistake, do you?’

He smiled. 'They're a bit like us that way.’

'By "us" do you mean the police or the Wee Frees?’

Burns was more than just a member of the Free Church of Scotland. On Sunday afternoons he took his religion to the foot of The Mound, where he spouted hellfire and brimstone to anyone who'd listen. Rebus had listened a few times. But Burns took a break during the Festival. As he'd pointed out, even his voice would be fighting a losing battle against steel bands and untuned guitars.

They were turning into the Gar-B, passing the gable end again with its sinister greeting.

'Drop me as close as you can, eh?’

"Sure,' said Burns. And when they came to the dead end near the garages, he slowed only fractionally as he bumped the car up first onto the pavement and then onto the grass. 'It's not my car,' he explained.

They drove beside the path past the garages and a highrise, until there was nowhere else to go. When Burns stopped, the car was resting about twelve feet from the community centre.

'I can walk from here,' said Rebus.

Kids who'd been lying on the centre's roof were standing now, watching them, cigarettes hanging from open mouths. People watched from the path and from open windows, too. Burns turned to Rebus.

'Don't tell me you wanted to sneak up on them?’

'This is just fine.’

He opened his door. 'Stay with the car. I don't want us losing any tyres.’

Rebus walked towards the community centre's wide open doors. The teenagers on the roof watched him with practised hostility. There were paper planes lying all around, some of them made airborne again temporarily by a gust of wind. As Rebus walked into the building, he heard grunting noises above him. His rooftop audience were pretending to be pigs.

There was no preliminary chamber, just the hall itself. At one end stood a high basketball hoop. Some teenagers were in a ruck around the grounded ball, feet scraping at ankles, hands pulling at arms and hair. So much for noncontact sports. On a makeshift stage sat a ghetto blaster, blaring out the fashion in heavy metal. Rebus didn't reckon he'd score many points by announcing that he'd been in at the birth. Most of these kids had been born after Anarchy in the UK, never mind Communication Breakdown.

There was a mix of ages, and it was impossible to pick out Peter Cave. He could be nodding his head to the distorted electric guitar. He could be smoking by the wall. Or in with the basketball brigade. But no, he was coming towards Rebus from the other direction, from a tight group which included black t-shirt from Rebus's first visit.

'Can I help?’

Father Leary had said he was in his mid-twenties, but he could pass for, late-teens. The clothes helped and he wore them well. Rebus had seen church people before when they wore denim. They usually looked as if they'd be more comfortable in something less comfortable. But Cave, in faded denim jeans and denim shirt, with half a dozen thin leather and metal bracelets around his wrists, he looked all right.

'Not many girls,' Rebus stated, playing for a little more time.

Peter Cave looked around. `Not just now. Usually there are more than this, but on a nice night…’

It was a nice night. He'd left Patience drinking cold rose wine in the garden. He had left her reluctantly. He got no initial bad feelings from Cave. The young man was fresh faced and clear-eyed and looked level headed too. His hair was long but by no means untidy, and his face was square and honest with a deep cleft in the chin.

'I'm sorry,' Cave said, 'I'm Peter Cave. I run the youth club.’

His hand shot out, bracelets sliding down his wrist. Rebus took the hand and smiled. Cave wanted to know who he was, a not unreasonable request.

'Detective Inspector Rebus.’

Cave nodded. 'Davey said a policeman had been round earlier. I thought probably he meant uniformed. What's the trouble, Inspector?’

'No trouble, Mr Cave.’

A circle of frowning onlookers had formed itself around the two of them. Rebus wasn't worried, not yet.

'Call me Peter.’

'Mr Cave,' Rebus licked his lips, 'how are things going here?’

``What do you mean?’

`A simple question, sir. Only, crime in Pilmuir hasn't exactly dropped since you started this place up.’

Cave bristled at that. 'There haven't been any gang fights.’

Rebus accepted this. 'But housebreaking, assaults… there are still syringes in the playpark and aerosols lying-.’

'Aerosols to you too.’ Rebus turned to see who had entered. It was the boy with the naked chest and denim jacket.

'Hello, Davey,' said Rebus. The ring had broken long enough to let denim jacket through.

The youth pointed a finger. 'I thought I said you didn't want to know my name?’

'I can't help it if people tell me things, Davey.’

'Davey Soutar,' Burns added. He was standing in the doorway, arms folded, looking like he was enjoying himself. He wasn't of course, it was just a necessary pose.

'Davey Soutar,' Rebus echoed.

Soutar had clenched his fists. Peter Cave attempted to intercede. 'Now, please. Is there a problem here, Inspector?’

'You tell me, Mr Cave.’ He looked around him. 'Frankly, we're a little bit concerned about this gang hut.’

Colour flooded Cave's cheeks. 'It's a youth centre.’

Rebus was now studying the ceiling. Nobody was playing basketball any more. The music had been turned right down. 'If you say so, sir.’

`Look, you come barging in here 'I don't recall barging, Mr Cave. More of a saunter. I didn't ask for trouble. If Davey here can be persuaded to unclench his fists, maybe you and me can have a quiet chat outside.’ He looked at the circle around them. 'I'm not one for playing to the cheap seats.’

Cave stared at Rebus, then at Soutar. He nodded slowly, his face drained of anger, and eventually Soutar let his hands relax. You could tell it was an effort. Burns hadn't put in an appearance for nothing.

'There now,' said Rebus. 'Come on, Mr Cave, let's you and me go for a walk.’

They walked across the playing fields. Burns had returned to the patrol car and moved it to a spot where he could watch them. Some teenagers watched from the back of the community centre and from its roof, but they didn't venture any closer than that.

'I really don't see, Inspector-.’

'You think you're doing a good job here, sir?’

Cave thought about it before answering. 'Yes, I do.’

'You think the experiment is a success?’

'A limited success so far, but yes, once again.’

He had his hands behind his back, head bowed a little. He looked like he didn't have a care in the world.

'No regrets?’

'None.’

'Funny then…’

'What?’

'Your church doesn't seem so sure.’

Cave stopped in his tracks. 'Is that what this is about? You're in Conor's congregation, is that it? He's sent you here to… what's the phrase? Come down heavy on me?’

'Nothing like that.’

'He's paranoid. He was the one who wanted me here. Now suddenly he's decided I should leave, ipso facto I must leave. He's used to getting his way after all. Well, I don't choose to leave. I like it fine here. Is that what he's afraid of? Well there's not much he can do about it, is there? And as far as I can see, Inspector, there's nothing you can do about it either, unless someone from the club is found breaking the law.’