The buoyancy of the morning had passed, and now his thoughts took a darker turn. MacKay, no doubt, had told the truth, for he was not capable of falsehood, but if those Englishmen were not agents of the English government, did it follow that they were clear of suspicion? There was some mystery about them, for if indeed they had been Cavalier gentlemen who had abandoned the English service, would they be so anxious to conceal themselves? Why should they refuse to let their names be known? They had come from Livingstone's regiment. Was it possible that they had been sent by him, and if so, for what end? It is the penalty of once yielding to distrust that a person falls into the habit of suspicion, and the latent jealousy of Livingstone began to work like poison in Dundee's blood. Jean was innocent, he would stake his life on that, but Livingstone--who knew whether the attraction of those interviews was Dundee's cause or Dundee's wife? If Livingstone had been in earnest, he had been with King James's men that day; but he might be earnest enough in love, though halting enough in loyalty. If her husband fell, he would have the freer course in wooing the wife. What if he had arranged the assassination, and not William's government; what if Jean, outraged by that reflection upon her honor and infuriated by wounded pride, had consented to this revenge? Her house had never been scrupulous, and love changed to hate by an insult such as he had offered might be satisfied with nothing less than blood. Stung by this venomous thought, Dundee sprang to his feet, and looking at the westering sun, cried to Grimond, who had been watching him with unobtrusive sympathy, as if he read his thoughts, "Jock, the time for thinking is over, the time for doing has come."
He rode along the line and gave his last directions to the army. Riding from right to left, he placed himself at the head of the cavalry, and gave the order to charge. That wild rush of Highlanders, which swept before it, across the plain of Urrard, the thin and panic-stricken line of regular troops, was not a battle. It was an onslaught, a flight, a massacre, as when the rain breaks upon a Highland mountain, and the river in the glen beneath, swollen with the mountain water, dashes to the lowlands with irresistible devastation. Grimond placed himself close behind his master for the charge, and determined that if there was treachery in the ranks, the bullet that was meant for Dundee must pass through him. But the battle advance of cavalry is confused and tumultuous, as horses and men roll in the dust, and eager riders push ahead of their fellows, and no man knows what he is doing, except that the foe is in front of him. They were passing at a gallop across the ground above Urrard House, when Grimond, who was now a little in the rear of his commander, saw him lift his right arm in the air and wave his sword, and heard him cry, "King James and the crown of Scotland!" At that instant he fell forward upon his horse's mane, as one who had received a mortal wound, and the horse galloped off towards the right, with its master helpless upon it. Through the dust of battle, and looking between two troopers who intervened, Grimond saw the fair-haired Englishman lowering the pistol and thrusting it into his holster, with which he had shot Dundee through the armpit, as he gave his last command. Onward they were carried, till one of the troopers on his right fell and the other went ahead, and there was clear course between Grimond and the Englishman. They were now, both of them, detached from the main body, and the Englishman was planning to fall aside and escape unnoticed from the field. His comrade could not be seen, and evidently had taken no part in the deed. Grimond was upon him ere he knew, and before he could turn and parry the stroke, Jock's sword was in him, and he fell mortally wounded from his horse. Keen as Grimond was to follow his master, and find him where he must be lying ahead, he was still more anxious to get the truth at last out of the dying man. He knelt down and lifted up his head.