In the changing room Sandy Mason stood with his hands on his hips and laid about him with his tongue. His red hair curled strongly, his legs, firmly planted with the feet apart, were as rigid as posts. From top to toe he vibrated life. He was a stocky man in his thirties, on the short side, very strong, with dark brown eyes fringed disconcertingly by pale, reddish lashes.

As a jockey, a professional, he was not among the top dozen, but he had had a good deal of success, mainly owing to his fighting spirit. Nothing ever frightened him. He would thrust his sometimes unwilling mounts into the smallest openings, even occasionally into openings which did not exist until he made them by sheer force. His aggressiveness in races had got him into hot water more than once with the Stewards, but he was not particularly unpopular with the other jockeys, owing to his irrepressible, infectious cheerfulness.

His sense of humour was as vigorous as the rest of him, and if I thought privately that some of his jokes were too unkindly practical or too revoltingly obscene, I appeared to be in a minority.

'Which of you sods has half-inched my balancing pole?' he roared in a voice which carried splendidly above the busy chatter to every corner of the room. To this enquiry into the whereabouts of his whip, he received no reply.

'Why don't you lot get up off your fannies and see if you're hatching it,' he said to three or four jockeys who were sitting on a bench pulling on their boots. They looked up appreciatively and waited for the rest of the tirade. Sandy kept up a flow of invective without repeating himself until one of the valets produced the missing whip.

'Where did you find it?' demanded Sandy. 'Who had it? I'll twist his bloody arm.'

'It was on the floor under the bench, in your own place.'

Sandy was never embarrassed by his mistakes. He roared with laughter and took his whip. 'I'll forgive you all this time, then.' He went out into the weighing room carrying his saddle and whacking the air with his whip as if to make sure it was as pliable as usual. He always used it a good deal in the course of a race.

As he passed me where I stood just inside the changing room door, his eyes lifted to mine with one of the darting, laughing glances which made him likeable in spite of his faults. I turned and watched him go over and sit on the scales, parking the whip on the table beside him. He said something I couldn't hear, and both the Clerk of the Scales and the Judge, who was sitting there learning the colours so that he could distinguish them at the finish, laughed as they checked him against their lists and passed him for the race.

There had been rumours, a while back, that Sandy had'stopped' a few horses and had been rewarded handsomely by bookmakers for the service. But nothing had been proved, and the official enquiry had lasted barely an hour. Those who had felt the rough edge of Sandy 's practical jokes believed him capable of anything. Everyone else pointed out that stopping a horse was entirely out of character for one who had been in trouble for trying too ruthlessly to win.

Watching the free and easy way he handled the two racing officials, I could understand that in the face of that friendly, open manner, the Stewards at the enquiry must have found it impossible, in the absence of solidly convincing evidence, to believe him guilty. The general opinion among the jockeys was that Sandy had 'strangled' a couple at one stage, but not during the past few months.

'Stopping' a horse can be done by missing the start, setting off some lengths behind, and staying at the back. Then the crooked jockey can ride a fairly honest finish from the second last fence, when he is closely under the eyes of the crowd, secure in the knowledge that he had left the horse far too much to do and cannot possibly win. It is rare enough, because a jockey seen to do it regularly soon finds himself unemployed.

During my one and a half seasons' racing I had seen it happen only twice. It was the same man both times, a fair, round-faced youth called Joe Nantwich. On the second occasion, about two months ago, he had been lucky to escape with his licence, for he had been foolish enough to try it in a race where one of the jockeys was David Stampe, the tale-bearing younger son of the Senior Steward.

Joe, and, I was sure, Sandy too, had both gone to the lengths of deliberately holding back horses which, without their interference, would have been certain to win. They had, in fact, been guilty of criminal fraud. But was I so very much better, I wondered, as I tied on my helmet and took my saddle over to the scales. For I proposed to take Forlorn Hope sensibly over the hurdles, concentrating on getting round the course; and I had no intention of riding him all out in the faint possibility that he might finish in the first three. He was not properly fit, and too hard a race would do him great harm. Of course if by some unforeseen circumstances, such as a lot of falls among the other horses, I found myself placed with a winning chance, I intended to seize it. There is a world of difference between'stopping' and 'not trying hard, but willing to win': but the result for disgruntled backers is the same. They lose their money.

I took my saddle out to the saddling boxes, where Pete was already waiting with Forlorn Hope. He saddled up, and Rupert, the tiny stable lad, led the horse out into the parade ring. Pete and I strolled in after him, discussing the other horses in the race. There was no sign of Kate.

When the time came I mounted and rode out on to the course. The familiar excitement was in my blood again. Not Bill's death, nor Scilla's mourning, nor the thought of Kate making progress with someone else, could affect the gripping happiness I always felt when cantering down to the starting gate. The speed of racing, the quick decisions, the risks, these were what I badly needed to counteract the safeties of civilization. One can be too secure. Adventure is good for the soul, especially for someone like me, whose father stopped counting after the fourth million.

And my father, with an understanding based on his own much wilder youth, had given me unconditionally a fast car and three good horses and turned me loose in a country five thousand miles from home. He said, however, as he dispatched me with his blessing, that he thought steeplechasing was rather mild for one who had been taken crocodile hunting on the Zambezi every year since he was ten. My father's annual month away from his trading empire usually meant for us a dash across the veldt and a plunge into the primeval forest, sometimes equipped with the absolute minimum of kit and no one but ourselves to carry it. And I, for whom the deep jungle was a familiar playground, found the challenge I needed in a tamed land, on friendly animals, in a sport hemmed all about with rules and regulations. It was very odd, when one came to consider it.

The starter called the roll to make sure everyone had arrived, while he circled round and checked the tightness of the girths. I found Joe Nantwich guiding his horse along beside me. He was wearing his usual unpleasant expression, half petulance, half swank.

'Are you going back to the Davidsons' after the races, Alan?' he asked. He always spoke to me with a familiarity I slightly resented, though I tried not to.

'Yes,' I said. Then I thought of Kate. 'I may not go at once, though.'

'Will you give me a lift as far as Epsom?'

'I don't go that way,' I said, very politely.

'But you go through Dorking. I could get a bus on from there if you don't want to go to Epsom. I came with someone who is going on to Kent, so I've got to find some transport home.' He was persistent, and although I thought he could find someone going directly to Epsom if he tried hard enough, I agreed in the end to take him.