In the Palace of the King by F. Marion Crawford

All that had happened from the time when Don John had fallen in his room to the moment when Dolores left her sister on the terrace had occupied little more than half an hour, during which the King had descended to the hall, Mendoza had claimed the guilt of Don John's murder, and the two had gone out under the protection of the guards. As soon as Dolores was out of hearing, Inez rose and crept along the terrace to Don John's door. In the confusion that had ensued upon the announcement of his death no one had thought of going to him; every one took it for granted that some one else had done what was necessary, and that his apartments were filled with physicians and servants. It was not the first time in history that a royal personage had thus been left alone an hour, either dead or dying, because no one was immediately responsible, and such things have happened since.

Inez stole along the terrace and found the outer door open, as the dwarf had left it when he had carried Dolores out in his arms. She remembered that the voices she had heard earlier had come from rooms on the left of the door, and she felt her way to the entrance of the bedchamber, and then went in without hesitation. Bending very low, so that her hands touched the floor from time to time, she crept along, feeling for the body she expected to find. Suddenly she started and stood upright in an instant. She had heard a deep sigh in the room, not far off.