Mrs. Kerry Sanders, that very wealthy American lady, had engaged Jonah Dereham, ex-prize-winning jockey, to buy a steeplechaser for the son of a special friend. The son was Nicol Brevett, an aggressive young man with a sudden, dangerous temper. But there was more than wealth and sophistication in this horse deal. As he left the stables he took a crushing blow on the head and heard a voice say: "We don't want your money, we want your horse." And that was just the beginning.