"Precisely, and even then the High-Bailiff was in advance of every one else with the news," nodded the Prince, "and that is where our difficulty lies. How to collect together a couple of thousand men at perhaps an hour’s notice--men who are scattered in different portions of this city and probably engaged in their usual avocations." "Where will their leaders be?" "Each at the different points where our secret stores of arms are kept. There are four of these points and four captains whom I have appointed to command five hundred men each. Having distributed the arms, the captains will lead their respective companies to the Waalpoort, where a crowd is sure to collect as soon as the rumour has spread to the town that the Lieutenant-Governor is coming. Our men will mix with the crowd, and at a given signal--when the Duke’s cortège crosses the bridge--they will rush the bodyguard, scatter confusion among the escort, and in the mêlée seize the person of Alva. During the inevitable tumult that will ensue among the soldiers and the populace, our valuable hostage shall be conveyed in absolute secrecy to Het Spanjaard’s Kasteel, where of course we can easily keep him a close prisoner whilst we negotiate with the King. But this of course is for the future, seigniors," he added, "and my concern now is to explain to you the method which I and my councillors have devised for the calling together of our stalwarts as soon as the Duke’s coming visit is announced. Have I your close attention, seigniors?" He had indeed. The four men round the table bent forward more eagerly still so as not to lose one word of their noble chief’s commands. But before they could formulate the words of loyalty and of enthusiasm which hovered on their lips, a soft sound like the beating of a bird’s wing against the window-pane froze those whispered words upon their lips. Every head was immediately turned to the window, every face became rigid and pale, every brow was contracted with the effort to strain the faculty of hearing to its tensest point. It seemed as if six pairs of glowing eyes would pierce the folds of the velvet curtain which hung before the window. III The Prince was the first to recover himself. "It is Leatherface," he whispered, "come to give me warning." He rose and would have gone to the window, but Clémence van Rycke caught him by the arm and clung convulsively to him. "Not you, Monseigneur," she entreated, "not you--it might be a traitor." Then the tapping was repeated and Laurence went cautiously up to the window, and after an instant’s hesitation, he suddenly drew the curtains aside with a resolute gesture. Then he unfastened the tall casement and threw it open.