'Simple Minds let us borrow it.’

'Whose is it really though?’

'Where's your search warrant?’

The officer smiled again. He could see that his partner was itching for trouble, but though neither of them had a welter of experience, they weren't stupid either. They knew where they were, they knew the odds. So he stood there smiling, legs apart, arms by his side, not looking for aggro. He seemed to be having a dialogue with one of the group, a guy with a denim jacket and no shirt underneath. He was wearing black square-toed biker boots with straps and a round silver buckle. The officer had always liked that style, had even considered buying himself a pair, just for the weekends.

Then maybe he'd start saving for the bike to go with them.

'Do we need a search warrant?’ he said. 'We're called to a disturbance, doors wide open, no one barring our entry. Besides, this is a community centre. There are rules and regulations. Licences need to be applied for and granted. Do you have a licence for this… soiree?’

'Swaah-ray?’ the youth said to his pals. 'Fuckin' listen to that! Swaaah-rrrayl' And he came sashaying over towards the two uniforms, like he was doing some old-fashioned dance step. He turned behind and between them. 'Is that a dirty word? Something I'm not supposed to understand? This isn't your territory, you know. This is the Gar-B, and we're having our own wee festival, since nobody bothered inviting us to the other one. You're not in the real world now. You better be careful.’

The first officer could smell alcohol, like something from a chemistry lab or a surgery: gin, vodka, white rum.

'Look,' he said, 'there has to be someone running the show, and it isn't you.’

'Why not?’

'Because you're a short-arsed wee prick.’

There was stillness in the hall. The other officer had spoken, and now his partner swallowed, trying not to look at him, keeping all his concentration on the denim jacket. Denim jacket was considering, a finger to his lips, tapping them.

`Mmm,' he said at last, nodding. 'Interesting.’

He started moving back towards the group. He seemed to be wiggling his bum as he moved. Then he stooped forward, pretending to tie a shoe-lace, and let rip with a loud fart. He straightened up as his gang enjoyed the joke, their laughter subsiding only when denim jacket spoke again.

'Well, sirs,' he said, 'we're just packing everything away.’

He faked a yawn. 'It's well past our bedtimes and we'd like to go home. If you don't mind.’

He opened his arms wide to them, even bowed a little.

'I'd like to-.’

'That'll be fine.’

The first officer touched his partner's arm and turned away towards the doors. They were going to get out. And when they got out, he was going to have words with his partner, no doubt about that.

'Right then, lads,' said denim jacket, 'let's get this place tidy. We'll need to put this somewhere for a start.’

The constables were near the door when, without warning, the ghetto-blaster caught both of them a glancing blow to the back of their skulls.

Rebus heard about it on the morning news. The radio came on at six twenty-five and there it was. It brought him out of bed and into his clothes. Patience was still trying to rouse herself as he placed a mug of tea on the bedside table and a kiss on her hot cheek.

'Ace in the Hole and Casablanca,' he said. Then he was out of the door and into his car.

At Drylaw police station, the day shift hadn't come on yet, which meant that he heard it from the horses' mouths, so to speak. Not a big station, Drylaw had requested reinforcements from all around, as what had started as an assault on two officers had turned into a miniature riot. Cars had been attacked, house windows smashed. One local shop had been ram-raided, with consequent looting (if the owner was to be believed). Five officers were injured, including the two men who had been coshed with a hi-fi machine. Those two constables had escaped the Gar-B by the skin of their arses.

'It was like Northern bloody Ireland,' one veteran said. Or Brixton, thought Rebus, or Newcastle, or Toxteth…

The TV news had it on now, and police heavy-handedness was being discussed. Peter Cave was being interviewed outside the youth club, saying that his had been the party's organising hand.

'But I had to leave early. I thought I had flu coming on or something.’

To prove it, he blew his nose.

'At breakfast-time, too,' complained someone beside Rebus.

'I know,' Cave went on, 'that I bear a certain amount of responsibility for what happened.’

'That's big of him.’ Rebus smiled, thinking: we police invented irony, we live by its rules.

'But,' said Cave, 'there are still questions which need answering. The police seem to think they can rule by threat rather than law. I've talked to a dozen people who were in the club last night, and they've told me the same thing.’

'Surprise, surprise.’

'Namely, that the two police officers involved made threats and menacing actions.’

The interviewer waited for Cave to finish. Then: 'And what do you say, Mr Cave, to local people who claim the youth club is merely a sort of hang-out, a gang headquarters for juveniles on the estate?’

Juveniles: Rebus liked that.

Cave was shaking his head. They'd brought the camera in on him for the shot. 'I say rubbish.’

And he blew his nose again. Wisely, the producer switched back to the studio.

Eventually, the police had managed to make five arrests. The youths had been brought to Drylaw. Less than an hour later, a mob from the Gar-B had gathered outside, demanding their release. More thrown bricks, more broken glass, until a massed charge by the police ranks dispersed the crowd. Cars and foot patrols had cruised Drylaw and the GarB for the rest of the night. There were still bricks and strewn glass on the road outside. Inside, a few of the officers involved looked shaken.

Rebus looked in on the five youths. They sported bruised faces, bandaged hands. The blood had dried to a crust on them, and they'd left it there, like war paint, like medals.

'Look,' one of them said to the others, 'it's the bastard who took a poke at Pete.’

'Keep talking,' retorted Rebus, 'and you'll be next.’

'I'm quaking.’

The police had stuck a video camera onto the rioters outside the station. The picture quality was poor, but after a few viewings Rebus made out that one of the stone throwers, face hidden by a football scarf, was wearing an open denim jacket and no shirt.

He stuck around the station a bit longer, then got back in his car and headed for the Gar-B. It didn't look so different. There was glass in the road, sounds of brittle crunching under his tyres. But the local shops were like fortresses: wire mesh, metal screens, padlocks, alarms. The would-be looters had run up and down the main road for a while in a hotwired Ford Cortina, then had launched it at the least protected shop, a place specialising in shoe repairs and keycutting. Inside, the owner's own brand of security, a sleepy-eyed Alsatian, had thrown itself into the fray before being beaten off and chased away. As far as anyone knew, it was still roaming the wide green spaces.

A few of the ground floor flats were having boards hammered into place across their broken windows. Maybe one of them had made the initial call. Rebus didn't blame the caller; he blamed the two officers. No, that wasn't fair. What would he have done if he'd been there? Yes, exactly. And there'd have been more trouble than this if he had…

He didn't bother stopping the car. He'd only be in the way of the other sight-seers and the media. With not much happening on the IRA story, reporters were here in numbers. Plus he knew he wasn't the Gar-B's most popular tourist. Though the constables couldn't swear who'd thrown the ghetto-blaster, they knew the most likely suspect. Rebus had seen the description back at Drylaw. It was Davey Soutar of course, the boy who couldn't afford a shirt. One of the CID men had asked Rebus what his interest was.