I ran my tongue round my teeth and looked only marginally interested, as if my mind was on something else. 'What did George say about her ideas on Gleaner and Zingaloo?' I said.

'He took it for granted I wouldn't take her seriously, but anyway, he said it was just that she had the heeby-jeebies that someone would nobble Tri-Nitro, and she was getting everything out of proportion. Her age, he said. Women always went very odd, he said, at that age. He said the security round Tri-Nitro was already double what he considered really necessary, because of her nagging, and when the new season began he'd have night patrols with dogs, and such like. Which is now, of course. He told me that Rosemary was quite wrong, anyway, about Gleaner and Zingaloo being got at, but that she'd got this obsession on the subject, and he was ready to humour her to some degree to stop her going completely bonkers. It seems that both of them… the horses, that is… proved to have a heart murmur, which of course accounted for their rotten performances as they matured and grew heavier. So that was that. No story.' He emptied his glass and refilled it. 'Well, Sid, mate, what is it you really want to know about George Caspar?'

'Um,' I said. 'Do you think there's anything he is afraid of?'

'George?' he said disbelievingly. 'What sort of thing?'

'Anything.'

'When I was there, I'd say he was about as frightened as a ton of bricks.'

'He didn't seem worried?'

'Not a bit.' 'Or edgy?' He shrugged.

'Only with his wife.'

'How long ago was it, that you went there?'

'Oh…' He considered, thinking. 'After Christmas. Yes… second week in January. We have to do those colour mags such a long time in advance.'

'You don't think, then,' I said slowly, sounding disappointed, 'that he'd be wanting any extra protection for Tri-Nitro?'

'Is that what you're after?' He gave the leering grin. 'No dice, then, Sid, mate. Try someone smaller. George has got his whole ruddy yard sewn up tight. For a start, see, it's one of those old ones enclosed inside a high wall, like a fortress. Then there's ten-foot high double gates across the entrance, with spikes on top.' I nodded.

'Yes… I've seen them.'

'Well, then.' He shrugged, as if that settled things.

There were closed-circuit televisions in all the bars at Kempton to keep serious drinkers abreast of the races going on outside, and on the nearest of these sets Bobby Unwin and I watched the second race. The horse which won by six lengths was the one trained by George Caspar, and while Bobby was thoughtfully eying the two inches of fizz still left in the bottle, George himself came into the bar. Behind him, in a camel-coloured overcoat, came a substantial man bearing all the stigmata of a satisfied winning owner. Cat-with-the-cream smile, big gestures, have this one on me.

'Finish the bottle, Bobby,' I said.

'Don't you want any?'

'It's yours.' He made no objections.

Poured, drank, and comfortably belched. 'Better go,' he said. 'Got to write up these effing colts in the third. Don't you go telling my editor I watched the second in the bar, I'd get the sack.' He didn't mean it. He saw many a race in the bar. 'See you, Sid. Thanks for the drink.'

He turned with a nod and made a sure passage to the door, showing not a sign of having despatched seven eighths of a bottle of champagne within half an hour. Merely laying the foundations, no doubt. His capacity was phenomenal.

I tucked his magazine inside my jacket and made my own way slowly in his wake, thinking about what he'd said. Passing George Caspar I said, 'Well done,' in the customary politeness of such occasions, and he nodded briefly and said 'Sid,' and, transaction completed, I continued towards the door.

'Sid…' he called after me, his voice rising.

I turned. He beckoned. I went back.

'Want you to meet Trevor Deansgate,' he said.

I shook the hand offered: snow-white cuff, gold links, smooth pale skin, faintly moist; well-tended nails, onyx and gold signet ring on little finger.

'Your winner?' I said. 'Congratulations.'

'Do you know who I am?'

'Trevor Deansgate?'

'Apart from that.'

It was the first time I'd seen him at close quarters. There was often, in powerful men, a give-away droop of the eyelids which proclaimed an inner sense of superiority, and he had it. Also dark grey eyes, black controlled hair, and the tight mouth which goes with well-exercised decision-making muscles.

'Go on, Sid,' George said into my tiny hesitation. 'If you know, say. I told Trevor you knew everything.'

I glanced at him, but all that was to be read on his tough weathered countenance was a sort of teasing expectancy. For many people, I knew, my new profession was a kind of game. There seemed to be no harm, on this occasion, of jumping obligingly through his offered hoop.

'Bookmaker?' I said tentatively: and to Trevor Deansgate directly, added, 'Billy Bones?'

'There you are,' said George, pleased. 'I told you so.'

Trevor Deansgate took it philosophically. I didn't try for a further reaction, which might not have been so friendly. His name at birth was reputed to be Shummuck. Trevor Shummuck from Manchester, who'd been born in a slum with a razor mind and changed his name, accent and chosen company on the way up. As Bobby Unwin might have said, hadn't we all, and why not?

Trevor Deansgate's climb to the big league had been all but completed by buying out the old but ailing firm of 'Billy Bones', in itself a blanket pseudonym for some brothers called Rubenstein and their uncle Solly. In the past few years 'Billy Bones' had become big business. One could scarcely open a sports paper or go to the races without seeing the blinding fluorescent pink advertising, and slogans like 'Make no Bones about it, Billy's best' tended to assault one's peace on Sundays. If the business was as vigorous as its sales campaign, Trevor Deansgate was doing all right.

We civilly discussed his winner until it was time to adjourn outside to watch the colts. 'How's Tri-Nitro?' I said to George, as we moved towards the door.

'Great,' he said. 'In great heart.'

'No problems?'

'None at all.' We parted outside, and I spent the rest of the afternoon in the usual desultory way, watching the races, talking to people, and thinking unimportant thoughts. I didn't see Rosemary again, and calculated she was avoiding me, and after the fifth race I decided to go.

A racecourse official at the exit gate stopped me with an air of relief, as if he'd been waiting for me for a shade too long.

'Note for you, Mr Halley.'

'Oh? Thanks.'

He gave me an unobtrusive brown envelope. I put it in my pocket and walked on, out to my car. Climbed in. Took out, opened, and read the letter.

Sid,

I've been busy all afternoon but I want to see you. Please can you meet me in the tea room? After the last?

Lucas Wainwright

Cursing slightly, I walked back across the car park, through the gate, and along to the restaurant, where lunch had given place to sandwiches and cake. The last race being just finished, the tea customers were trickling in in small thirsty bunches, but there was no sign of Commander Lucas Wainwright, Director of Security to the Jockey Club.

I hung around, and he came in the end, hurrying, anxious, apologising and harassed.

'Do you want some tea?' He was out of breath.

'Not much.'

'Never mind. Have some. We can sit here without being interrupted, and there are always too many people in the bar.' He led the way to a table and gestured to me to sit down.

'Look, Sid. How do you feel about doing a job for us?' No waster of time, Commander Wainwright.

'Does "us" mean the Security Service?'

'Yes.'

'Official?' I said, surprised. The Racecourse Security people knew in moderate detail what I'd recently been doing and had raised no objections, but I hadn't imagined they actually approved. In some respects, I'd been working in their territory, and stepping on their toes.