She commenced operations by going straight up in the air--so straight that for an instant Ann thought she must surely topple backwards, and wondered with a little breathless thrill of admiration how Brett contrived to keep his seat at all at such an angle. Possibly the mare wondered also, for, coming down once more on all four feet to find the hated incumbrance still astride her back, she reared again, immediately. Ann had a vision of two black hoofs pawing the air indignantly, then, swift as a flash of light, Brett had flung himself forward on the mare's neck and brought his crop down on her head between the pointed ears. She came down to earth with a bang, plunged violently, then, giving an evil twist to her whole body, started bucking with all the wicked energy that was in her. Brett had a magnificent seat, but twice she nearly had him out of the saddle, and it is certain that if he had not been blest with almost inexhaustible staying power, combined with a pliant strength of muscle, he would have come off second best in the contest of wills, for the mare seemed tireless, and looked as though she could go on bucking--and enjoying the process, too--till the crack of doom. Finding, however, that she could not rid herself of Forrester by the same methods which had proved easily successful with the stable lads at White Windows, she uttered a squeal of rage, laid back her ears, and bolted hell-for-leather across the downs. This proved altogether too much for Dick Turpin's composure. He was seized with a spirited desire to go and do likewise, and for a moment or two Ann had her hands full. Gradually, however, she steadied his first wild rush to a gallop, then to a canter, and finally, as he eased into a trot, she dared to direct her attention elsewhere and look round to discover what had become of Brett. She caught her breath with a gasp of dismay. Far ahead she could see the bay mare streaking across the downs, with Brett still square in the saddle, headed straight for the edge of the cliffs. From the way she tore along Ann knew she must be practically out of hand, and, if Brett were unable to turn her, the next few minutes would see horse and rider leap into space, to fall headlong down on to the rocks two hundred feet below. Instinctively she urged her cob in pursuit, though subconsciously aware of the utter futility of it--of her absolute helplessness to avert disaster. Sick with horror, she could see the mare rocketing wildly towards the brink of the cliff. Almost she thought she could hear the thunderous beat of the maddened hoofs racing the beat of her own heart as it thudded in her ears, feel the wind of that reckless rush towards destruction. Nearer ... nearer to the cliff's edge.... Ann's whole body stiffened convulsively in anticipation of the inevitable catastrophe.