At first Rocco refused this plea, declaring that Fidelio was too young to witness such dreadful sights as these wretched chained captives, and to emphasize his refusal, described the miserable state of one of these, who was nearly at the point of death through close confinement and starvation; but when Leonora, on hearing this, redoubled her entreaties, feeling sure from the description that this unhappy prisoner must be her own dear husband, he at length consented, feeling better pleased than ever with the youth's evident desire to assist him even in such disagreeable duties as visiting the dungeon captives.
At this moment Don Pizarro, the cruel Governor of the prison, entered the courtyard with some of the guard; and, after giving orders to the captain, he proceeded to read the despatches brought from the town by Fidelio, and now handed to him by Rocco.
Amongst these despatches, Pizarro found a missive warning him that the Prime Minister intended to pay a surprise visit to the prison that evening, having been informed that certain victims of despotic power were still unjustly held captives there; and, suddenly filled with fear at the thought of how he should account for the presence of Don Florestan, so long believed to be dead, he began to form a plan to avoid this new danger to himself, and soon decided to kill his hated enemy within the next few hours. However, he did not mean to do this dreadful deed himself, if possible; and so, when the guard had presently gone on duty, he detained Rocco, intending to make him his instrument of vengeance.
Carelessly handing the jailer a purse of gold, he hinted darkly that he desired the death of this wretched prisoner in the lowest dungeon; but Rocco, recoiling from the thought of such cold-blooded murder, refused to do the deed, although, being afraid of offending his unscrupulous superior, he tremblingly agreed to dig the victim's grave, if Pizarro himself would strike the fatal blow. With this the Governor was fain to be content; and the two departed separate ways, having first laid their plans and arranged that the grave should be dug beneath an old ruined cistern at the side of the dungeon.
Now it happened that Leonora, having suspected from the dark looks of Pizarro that he intended ill to someone, had crept back to the courtyard, where she had remained hidden in such a position that she could overhear the conversation between the Governor and Rocco; and filled with horror at the thought of the violent death now destined for the unhappy prisoner, whom she felt sure was her own beloved husband, she determined to rescue him that evening if possible, and hurried after Rocco, in order to be with him wherever he should go, and so learn all his plans.
Later on, she returned with the jailer to the courtyard, where she discovered Marcellina and Jacquino engaged in a lively dispute; and, finding that the squabble was about herself as the supposed Fidelio, whom Jacquino regarded as a rival and Marcellina desired as a new sweetheart, she hastily changed this embarrassing subject by entreating Rocco to allow the more privileged prisoners to walk for a short time in the courtyard to enjoy a breath of fresh air, a request he had several times promised to grant when a suitable opportunity should occur. As Marcellina also added her entreaties to this kindly request, hoping to please her dear Fidelio by so doing, Rocco agreed, promising to keep Pizarro engaged for a short time on business at the other end of the fortress; and so, when he had departed, Jacquino and Leonora unlocked the cells, and invited the wretched inmates to walk outside for a while.
Full of gratitude for this unexpected pleasure, the prisoners poured forth into the courtyard, walking about with slow painful steps, but uttering cries of delight at the sight of the brilliant sunshine, and inhaling the fresh summer air with deep thankfulness.
Presently, Rocco returned, and informed the new assistant that Pizarro had consented to his helping him in the duties of attending upon the dungeon captives, and that he should begin that day by helping to dig the grave for the victim who was to die so soon as it was ready; and Leonora was filled with conflicting emotions, joyful at the thought of meeting her beloved one again, should the captive indeed prove to be her husband, but terrified by the prospect of her dreadful task.
Whilst they were still talking together, Pizarro unexpectedly appeared on the scene; and, enraged at the sight of the captives walking in the courtyard, he poured forth angry abuse upon Rocco for daring to permit such a thing. The jailer, however, stopped this outburst by reminding Pizarro of the dark deed he was presently to assist him with; and, anxious to keep on good terms with one who knew his wicked plans, the Governor ceased to bluster, but gave orders for the prisoners to be once more locked up.