At that moment a loud knocking was heard outside at the inn door, and the voice of Lorenzo shouted eagerly for admission; and finding that their enterprise must now be delayed a little longer, Fra Diavolo and his companions quickly withdrew to the cupboard once more, just as Zerlina, awakened by the noise, sprang out of bed.
Hastily dressing herself, the girl ran to open the window, and discovering to her joy that Lorenzo and his carbineers were waiting below, she threw a key down to her lover, bidding him let the men into the kitchen. She then finished dressing, and was just about to go below, when Lorenzo, impatient to greet her, entered the room; and almost at the same time Lord Allcash issued forth in hasty attire from the chamber beyond, indignantly demanding the cause of the disturbance.
Lorenzo explained that he and his men had hopes of soon securing Fra Diavolo, for after pursuing him in a wrong direction on the hillsides for some time, they had casually learnt from a peasant that their quarry had been seen on the Terracina road. They had consequently retraced their steps, but deeming it necessary for his men to have a few hours' rest, having been long on the march, he had called in at Matteo's hostelry for that purpose. Zerlina quickly ran off to provide the carbineers with food, but Lord Allcash detained the brigadier a few minutes longer to listen to a pompous tirade against a country where peaceful travellers were set upon by brigands in the day-time, and roused thus rudely from their slumbers at night. Suddenly they were startled by a loud noise within the cupboard, for Beppo, by an awkward movement, had accidentally overturned some heavy object he had not noticed in the darkness. Fra Diavolo, however, was instantly ready with a subtle scheme to save the situation, and as Lorenzo and Lord Allcash crossed to the cupboard to discover the cause of the noise, he stepped forth, coolly smiling and bowing with the easy grace of the brilliant Marquis.
In answer to the indignant questions poured upon him, he blandly declared that he had concealed himself in the cupboard to keep a tender assignation; and by the aid of his clever wit, he led the Englishman to suppose that his intended meeting was to have been with Lady Allcash, whilst Lorenzo imagined that Zerlina was the expected fair one.
The young brigadier, filled with grief at this seeming proof of Zerlina's defection, instantly challenged the man he supposed to be her lover to a mortal duel, a challenge which was gaily accepted by the pretended Marquis, who arranged to meet him at seven o'clock next morning in a rocky pass near by.
Lady Allcash, attracted by the angry voices, now appeared on the scene, only to be met by indignant upbraidings from her outraged husband; and when Zerlina presently returned to announce that food was ready below, Lorenzo turned coldly aside and refused even to speak to her.
All was now confusion and dismay; and in the midst of the general disturbance, Fra Diavolo and his companions managed to escape unobserved from the inn.
Bidding Beppo and Giacomo return to the barn, and there await his further instructions, which he would convey to them next morning in a note concealed in a hollow tree near the inn, the bandit captain hastened to his familiar haunts on the mountain-side, and there, with the remnant of his scattered band, he arranged a third plot for the capture of the English travellers' wealth. It was decided that when Lorenzo came to keep his appointment for the duel in the rocky pass, he should be instantly surrounded and killed by a few ambushed rascals, and that when all the party from the inn had departed to the village church for Zerlina's wedding, and the carbineers had started on their march, the captain and remainder of the band should make a quiet raid on the hostelry and possess themselves of the treasure they had so long desired. Having completed his plans, Fra Diavolo wrote them down on a note for Beppo and Giacomo, bidding them to give him notice directly the inn was deserted by ringing the bell of a little hermitage on the hillside; and this message he slipped into the hollow tree agreed upon.
Just before seven o'clock next morning Matteo arrived at the inn with the young farmer, Francesco, and the rest of the wedding party, and poor Zerlina, who had vainly tried to learn the cause of Lorenzo's sudden coldness to her, was filled with despair. Seeing that the young brigadier was just about to depart with his carbineers in search of the brigand chief, and was making no attempt to prevent her marriage with Francesco, she ran to him once again, imploring him to say in what way she had offended him; and Lorenzo, still believing her to be false, at last declared in tones of suppressed anger that she had betrayed him by concealing another lover in her chamber the night before. He then hastened away to place himself at the head of the troop, remembering his appointment with the Marquis at seven o'clock; and his distracted sweetheart was left more mystified than ever.
At that moment, however, her attention was attracted by the two vagabonds, Beppo and Giacomo, who were drinking together at a little side-table close beside her; for having secured the captain's note, they were now awaiting the opportunity to carry out his instructions. Seeing Zerlina approach, Beppo nudged his companion, reminding him that this was the same pretty maid they had watched at her toilet the previous evening, and carried away by the amusing recollection, he repeated in a loud whisper the words of admiration she had uttered when standing before the mirror.