Meanwhile all seemed to sleep in the royal castle; nevertheless, within its walls one of the most discussed and terrible events in history was preparing. The King kept vigil in his room, and after eleven o'clock, one by one, there arrived, cautiously, the Prince de Évoli, the Duque de Feria, the Prior D. Antonio, and Luis Quijada. These were afterwards joined by two of the King's gentlemen, D. Pedro Manuel and D. Diego de Acuña, and to all of them D. Philip spoke "as never man spoke before," according to a document of the period, and showed them the hard and terrible necessity he saw of arresting and shutting up his son Prince Carlos. The best way of carrying this out, without scandal or dangerous resistance, was then discussed, and the King proposed his plan, which was naturally accepted. At midnight they all descended by an inside staircase, on tiptoe, in the dark, cautiously, not to arouse the guard, almost trembling, as justice has to tremble sometimes, to prevent and surprise crime. The Duque de Feria went first, with a dark lantern in his hand; the King followed, very pale, a cuirass under his clothes, a naked sword under his arm, and an iron helmet on his head. Behind him came all the rest, with naked swords, more to inspire terror and respect than because there was need to use them. Two of the King's servants, Santoyo and Bernal, with nails and hammers, and twelve guards with their lieutenant, also came. In the Prince's ante-room they met his two gentlemen, D. Rodrigo de Mendoza and the Conde de Lerma, who were on duty, and the King gave them orders to let no one pass. The door of the room opened without resistance, because the King had ordered the engineer de Foix secretly to make the Prince's springs useless. Ruy Gómez and the Duque de Feria approached the bed of D. Carlos with much caution; he was sleeping soundly, and without his knowing it they were able to put the arquebus and the unsheathed sword out of reach of his hand; the dagger they did not find. D. Carlos then woke, and, sitting up frightened, called out in a sleepy, startled voice: "Who goes there?" "The Council of State," replied Ruy Gómez. The Prince then threw himself out of bed with great violence and wished to grasp his weapons; with this movement the dagger slipped down, and Ruy Gómez picked it up from the ground. At the same time the Duque de Feria opened his lantern, and the Prince found himself face to face with his father. He threw himself back and cried, all beside himself, putting both hands to his head, "What is this? Does Y.M. wish to kill me?" The King answered very quietly that he wished to do the Prince no harm, but that he wished him and all the kingdom well. Then he ordered the servants to bring lights, to nail up the windows, and take away all arms, even to the fire-irons.