The soldiers had been awaiting news at the inn of Terracina, but on learning that Fra Diavolo and his rogues had been seen in the neighbourhood, they at once received orders to start off in pursuit. In merry haste, they drank the stirrup-cups poured out for them by old Matteo, the inn-keeper, and his pretty daughter, Zerlina; for a price had been set upon the head of Fra Diavolo, and they were eager to win the reward.

But the captain of this gay troop, a handsome young brigadier named Lorenzo, sat alone at a side table, full of gloom; and when the inn-keeper presently invited all the company to attend the wedding of his daughter with a neighbouring farmer on the morrow, the look of sadness on his face deepened still more.

For Lorenzo, on arriving at the inn, had quickly fallen in love with the pretty Zerlina himself, and when he had declared his passion for her, the maiden had gladly responded with an answering love as deep and tender as his own. But Matteo, the inn-keeper, would not hear of his daughter wedding a poor brigadier who had naught but his wretched pay to live upon, and to settle the matter he hastily arranged a marriage for her with Francesco, a well-to-do young farmer who came forward as a suitor just at this time. Negotiations were quickly made, and the ceremony fixed to take place on Easter Morn; and now, on the evening before, Zerlina, compelled to obey her parent's will, was bidden to say farewell to her portionless lover.

Whilst the two were whispering together in a sad undertone, a loud noise of excited voices was suddenly heard without, and next moment a lady and gentleman rushed wildly into the inn, both dishevelled, and showing signs of great alarm. They declared in agitated tones that they had just been set upon by a band of fierce brigands, who had robbed them of all their jewels and available property, and they added that it was only by leaving the robbers in undisputed possession of their travelling carriage that they had been able to escape with their lives.

Whilst Zerlina ran to attend to the exhausted lady, the gentleman, who was extremely fussy in manner, introduced himself as Lord Allcash, an English peer of great wealth touring through Italy with his newly-wedded wife, explaining that it was scarcely a mile away that their postillion had been stopped by the bandits.

On hearing this, Lorenzo exclaimed that it must have been the very band of outlaws he had been sent to capture—that of the famous Fra Diavolo—and calling his men together, he bade them march forth to the hillside at once. Full of joy, the carbineers sprang to their feet and hurried from the inn, eager for their expected prey; and with a last sad farewell to the now weeping Zerlina, Lorenzo quickly followed.

Lord Allcash immediately sat down to write out a notice, offering a reward for the recovery of his stolen property; and his wife, having noticed the tender parting between Zerlina and her lover, drew the girl aside and asked the cause of her trouble. Having learnt that it was only a matter of dowry that kept these two loving hearts apart, the lady, being of a sentimental disposition, persuaded her husband to make the reward a thousand ducats, hoping that the prize would be gained by the handsome Lorenzo, who would thus become an eligible suitor for the inn-keeper's daughter.

The notice was then fastened in a prominent place; and Lord and Lady Allcash were just about to retire to the private apartments that had been hastily prepared for them, when a splendid carriage suddenly drew up at the inn door. A handsome man, of gay débonnaire appearance, stepped lightly to the ground, and bowed gracefully to the English tourists; and Lady Allcash, to her delight, recognised a charming fellow-traveller who had followed in their wake for several days past, and with whom she had more than once indulged in a pleasant flirtation.

But her husband uttered an angry exclamation, for, being somewhat dull and stupid himself, he was already jealous of his coquettish wife's brilliant admirer; and seizing her by the hand, he led her into an inner chamber, very much against her will.

The gay newcomer, who gave his name as the Marquis of San Carlo, entered the inn and ordered a repast, announcing that he meant to remain the night; and old Matteo bustled his servants about in high good-humour, blessing the good fortune that had brought two great lords to his hostelry on the same day.