So they went quietly and quickly along, the man and his master, following very nearly the way which Omobono had taken on the previous afternoon, till they came to the long wall crested with sharp bits of rusty iron and broken crockery, and stopped before the only door that broke its blank length. Zeno looked at the defence critically, and wondered just how great an inducement would make him take the trouble of getting over it, at the risk of cutting his hands and tearing his clothes. Before any one answered his footman's knock, he had decided that it would be an easy matter to bring his well-broken horse close to the wall, to stand on the saddle, draw himself up and throw a heavy cloak over the spiky iron and the sharp-edged shards with one hand while hanging by the other. The rest would be easy enough. It was always his instinct to make such calculations when he entered or passed by any place that was meant to be defended. This time the door was opened by Rustan Karaboghazji in person, and he bowed to the ground as Zeno got off his horse and stood beside him. Still bending low he made way and with a wide gesture invited his visitor to enter. But Zeno had no intention of wasting time by going in till he was assured that there was something ready for his inspection in the way of merchandise. In answer to his question Rustan turned up his face sideways and smiled cunningly as he gradually straightened himself. 'Your Magnificence shall see!' he answered. 'Where is the letter? Every point is perfect, as I promised.' 'Were you really speaking the truth?' laughed Zeno. 'I expected to come at least three times before seeing anything!' Rustan assumed an expression of gentle reproach. 'If your Splendour had dealt with Barlaam, the Syrian merchant, or with Abraham of Smyrna, the Jewish caravan-broker,' he said, 'it would have been as your Greatness deigns to suggest. Moreover, your Highness would not have been satisfied after all, and would have come at last to the house of your servant Rustan Karaboghazji, surnamed the Truth-speaker and the Just, and also the Keeper of Promises, by those who know him. It must have been so, since there is but one treasure in all the Empire such as your Mightiness asks for, and it is in this house.' Zeno laughed carelessly, and entered. 'Your Unspeakableness is amused,' said Rustan, fastening the outer door carefully with both keys. 'But if it is not as I say, I entreat your High Mightiness to kick his humble servant from this door to the Seven Towers and back again, passing by the Chora, Blachernæ, and the Church of the Blessed Pantokrator on the way.' 'That would take a long time,' observed Zeno. 'Open the door and let me see the girl.' 'Your Grandeur shall see, indeed!' answered Rustan, smiling confidently as he led the way. 'Rustan the Truth-speaker,' he continued, as if to himself while walking, 'Karaboghazji the faithful Keeper of Promises!'