Seeing what had happened the sentinels started in pursuit at full speed, following the sound of the charger's shoes on the cobble-stones rather than anything they could see, for it was as dark as pitch outside.

The officer, who was very active and seemed indifferent to the frightful risk he ran, still clung to the bridle, regained his feet, ran nimbly by the side of the galloping horse, and seemed about to spring up and close with Zeno to drag him from the saddle. Zeno had no weapon within reach now, for his knife was in his own belt, under the belted tunic he wore over his clothes, and he could not possibly get at it. But the officer was unarmed, too, as he had sprung from his couch, and was at a great disadvantage on foot.

They dashed on into the darkness of the broad street. Zeno bent down, and tried to get at his adversary's collar with his right hand, but the officer dodged him and jerked the bridle with desperate energy, bringing the Tunisian to a stand after one more furious plunge. At the same instant Zeno heard the footsteps of the two guardsmen running up behind, and he realised that the odds were three to one against him, and that he had no weapon in his hand. The troopers, of course, had their Greek sabres. If he could not escape, he must either be taken alive or cut to pieces on the spot, with no defence but his bare hands.

He did not hesitate. The officer, dragging down the charger's head by his weight to stop him, was almost on his knees for a moment, on the off side, of course, and the soldiers had not yet come up. Zeno dropped the reins, sprang from the saddle, and ran for his life.

CHAPTER XII

Zoë sat in the dark just within the open doorway of Zeno's house, before the marble steps. She was shivering with cold, now that the danger to herself was over, and she was bent with pain, though she scarcely knew she was hurt; for she was conscious only of her anxiety for Zeno. If he got out of the tower and reached his home, he would certainly come in by that door, since he had left it open, and the one on the land side was barred; and there was a way of coming round the house to the water's edge without entering the gate or passing through the fore-court.

Zeno had unconsciously stepped upon her body with his whole weight in getting out, when she lay hidden in the bottom of the boat, but she would rather have died than have made a sound or winced under the pressure. And now her side hurt her, and the pain ran down to her knee and her foot, so that she had hardly been able to walk after Gorlias had helped her ashore.

It had been impossible to hinder her from getting in, when she had run down to the landing while Zeno was changing his clothes; there had not been time, and she had not waited to argue the question, but had simply whispered to Gorlias that she was going, and that he must hide her as well as he could, and say nothing. He was not a man to be easily surprised, and he reflected that as she was in the secret, and as it was her influence that had decided Zeno to act at last, she might possibly be useful; as indeed she afterwards proved herself to be. Besides, Gorlias thought it likely that Zeno had told her all his plans, although he did not wish to take her with him; for the astrologer was not at all clear as to the relations existing between the master and the slave.

She sat alone and shivering in the dark. Gorlias had left her and had hastened back to the foot of the tower to remove all traces of the unsuccessful attempt before daybreak, by throwing the dead body into the water with a weight, and carrying off the gear that had been left lying on the sloping pier. Zoë thought he must be of iron. He had been some time in the water in his clothes, and had probably been more or less bruised in the struggle, and in rolling down the stones, if not by the fall at the end. But he seemed as calm and collected as ever, and apparently had no idea of drying himself before morning.

Zoë thought of him only very vaguely as of a person connected with Zeno, round whom alone the whole world had moved since she had known that he loved her; and in her imagination she followed him on after he had reached the tower window the second time and had whistled the call that told her he was safe so far.