Before he lost his liberty the Emperor had known Zeno, and though a weak man, had judged him rightly. In his prison he possessed means of communicating occasionally with his friends, and he had instructed them to ask Zeno's help; but so far his message had either not been delivered or Zeno had been deaf to the appeal, perhaps judging that the time was not come for the attempt, or that, after all, the cause was not a good one. Having failed to move him in all other ways, the revolutionaries had seized the unexpected opportunity that now presented itself. The thought that such a man might turn the tide of history, restore the rightful sovereign to the throne, and avenge the awful death of Michael Rhangabé, had crossed Zoë's mind when she had first seen her purchaser in Rustan's house, for the born leader and fighting man generally has something in his face that is not to be mistaken; but to influence Carlo was another matter, as she had understood when he had supped with her. It would be as hard to induce him to do anything he was not inclined to do of his own accord as it would be impossible to hinder him from attempting whatever he chose to try. As for winning him to the cause by gentler means, the high-born girl blushed at the suggestion. He was certainly not in love with her at first sight; of that she was as sure as that she did not love him either. Yet while she was thinking, she suddenly wondered whether Gorlias had spoken the truth about Giustina Polo. Was she really thirty, and was her face pitted like a cheese-grater, as Gorlias had told her? If she was ugly, why did Zeno go to Polo's house so often? For Zoë had no doubt but that he went there every time he was rowed up the Golden Horn in his pretty skiff. He was always carefully dressed when he stepped into his boat; it was not for old Polo that he wore such fine clothes.