He moved his own car to where he could see the Roller, then sat tight. Half an hour later, the fat man emerged, looking to left and right. He walked to the car, unlocked it and held open the back door. Only now did another figure emerge from the club. Rebus caught a swishing full-length black coat, sleek hair and chiselled face. The man slipped into the car, and the fat man closed the door and squeezed in behind the steering wheel.

Like them or not, you had to admire Rollers. They carried tonnage.

Back in Edinburgh he parked his car and sat in it, smoking his eleventh cigarette of the day. He sometimes played this game with himself – I'll have one more tonight, and deduct one from tomorrow's allowance. Or he would argue that any cigarette after midnight came from the next day's stash. He'd lost count along the way, but reckoned by now he should be going whole days without a ciggie to balance the books. Well, when it came down to it, ten cigarettes a day or twelve, thirteen, fourteen – what difference did it make?

The street he was parked on was quiet. Residential for the most part with big houses. There was a basement bar on the corner, but it did mostly lunchtime business from the offices on neighbouring streets. By ten, the place was usually locked up. Taxis rippled past him and the occasional drunk, hands in pockets, would weave slowly homewards. A few of the taxis stopped just in front of him and disgorged their fares, who would then climb half a dozen steps and push open the door to the Morvena Casino. Rebus had never been inside the place. He placed the occasional bet on the horses, but that was about it. Gave up doing the football pools. He bought a National Lottery ticket when opportunity arose, but often didn't get round to checking the numbers. He had half a dozen tickets lying around, any one of which could be his fortune. He quite liked the notion that he might have won a million and not know it; preferred it, in fact, to the idea of actually having the million in his bank account. What would he do with a million pounds? Same as he'd do with fifty thou – self-destruct.

Only faster.

Jam's had asked him about Mitch – Roy Mitchell, Rebus's best friend at school. The more time Rebus had spent with her, the less he'd seen of Mitch. They'd been going to join the army together, hoping they might get the same regiment. Until Mitch lost his eye. That had been the end of that. The army hadn't wanted him any more. Rebus had headed off, sent Mitch a couple of letters, but by the time his first leave came, Mitch had already left Bowhill. Rebus had stopped writing after that…

When the Morvena's door opened next, it was so eight or nine young people could leave. The shift changeover. Three of them turned one way, the rest another. Rebus watched the group of three. At the first set of lights, two kept going and one crossed the road and took a left. Rebus started his engine and followed. When the lights turned green, he signalled left and sounded his horn, then pulled the car over and wound down his window.

'Mr Rebus,' the young man said.

'Hello, Matty. Let's go for a drive.'

Officers from other cities, people Rebus met from time to time, would remark on how cushy he had it in Edinburgh. Such a beautiful place, and prosperous. So little crime. They thought to be dangerous a city had to look dangerous. London, Manchester, Liverpool -these places were dangerous in their eyes. Not Edinburgh, not this sleepy walking-tour with its monuments and museums. Tourism aside, the life-blood of the city was its commerce, and Edinburgh 's commerce – banking, insurance and the like – was discreet. The city hid its secrets well, and its vices too. Potentially troublesome elements had been moved to the sprawling council estates which ringed the capital, and any crimes committed behind the thick stone walls of the city centre's tenements and houses were often muffled by those same walls. Which was why every good detective needed his contacts.

Rebus took them on a circuit – Canonmills to Ferry Road, back up to Comely Bank and through Stock-bridge into the New Town again. And they talked.

'I know we had a sort of gentleman's agreement, Matty,' Rebus said.

'But I'm about to find out you're no gentleman?'

Rebus smiled. 'You're ahead of me.'

'I wondered how long it would take.' Matty paused,

stared through the windscreen. 'You know I'll say no.'

'Will you?'

'I said at the start, no ratting on anyone I work with or work for. Just the punters.'

'Not even many of them. It's not like I've been milking you, Matty. I'll bet you've dozens of stories you haven't told me.'

'I work tables, Mr Rebus. People don't place a bet and then start yacking about some job they've pulled or some scam they're running.'

'No, but they meet friends. They have a drink, get mellow. It's a relaxing place, so I've heard. And maybe then they talk.'

'I've not held anything back.'

'Matty, Matty.' Rebus shook his head. 'It's funny, I was just thinking tonight about that night we met. Do you remember?'

How could he forget? A couple of drinks after work, a car borrowed from a. friend who was away on holiday. Matty hadn't been back long. Driving through the town was great, especially with a buzz on. Streets glistening after the rain. Late night, mostly taxis for company. He just drove and drove and, as the streets grew quieter, he pushed the accelerator a bit further, caught a string of green lights, then saw one turning red. He didn't know how good the tyres were, imagined braking hard and skidding in the wet. Fuck it, he put his foot down.

Just missed the cyclist. The guy was coming through on green and had to twist his front wheel hard to avoid contact, then teetered and fell onto the road. Matty's foot eased off the accelerator, thought about the brake, then went back on the accelerator again.

That's when he saw the cop car. And thought: I can't afford this.

They'd breathalysed him and taken him to St Leonard 's, where he'd sat around and let the machinery chew him up. Would it come to a trial? Would there be a report in the papers? How could he keep his name from getting around? He'd worked himself up into a right state by the time Detective Inspector John Rebus had sat down across from him.

'I can't afford this,' Matty had blurted out.

'Sorry?'

He'd swallowed and tried to find a story. 1 work in a casino. Any black mark against me, they'll boot me out. Look, if it's a question of compensation or anything… like, I'll buy him a new bike.'

Rebus had picked up a sheet of paper. 'Drunk driving… in a borrowed car you weren't insured to drive… running a red light… leaving the scene of an accident…' Rebus had shaken his head, read the sheet through one more time and then put it down, and looked up at Matty. 'What casino did you say you work for?'

Later, he'd given Matty two business cards, both with his phone number. 'The first one's for you to tear up in disgust,' he'd said. The other one's to keep. Have we got a deal?'

'Look, Mr Rebus,' Matty said now, as the car stopped for lights on Raeburn Place, 'I'm doing the best I can.'

'I want to know what's happening behind the scenes at the Morvena.'

'I wouldn't know.'

'Anything at all, it doesn't matter how small it seems. Any stories, gossip, anything overheard. Ever seen the owner entertain people in his office? Maybe open the place for a private party? Names, faces, anything at all. Put your mind to it, Matty. Just put your mind to it.'

They'd skin me alive.'

'Who's they?'

Matty swallowed. 'Mr Mandelson.'

'He's the owner, right?'

'Right.'

'On paper at least. What I need to know is who might be pulling his strings.'

'I can't see anyone pulling his strings.'