quintet ("Oh, Surprise unexpected!") occurs, leading up to an ensemble
full of humor, with a repetition of the brigand song, this time by
Catarina and Diana, and closing with a bravura aria sung by Catarina
("Love! at once I break thy Fetters"). Catarina and Rebolledo accept
the proffered hospitality, but the latter quietly makes his exit when
Diana begins to read an account of a robbery which contains a
description of himself and his companion. Catarina remains, however,
in spite of Don Henrique's warning that she is in the house of the
Minister of Police. In a moment of passion he declares his love for
her and begs her to fly with him. She declines his proffer, but gives
him a ring as a souvenir. A pretty little duet ("If I could but
Courage feel") ensues between Diana and Don Henrique, in which she
gently taunts him with his inattention to her and his sudden interest
in the handsome stranger. At this juncture the Count enters in wild
excitement over the announcement that the crown jewels have been
stolen. Don Henrique's ring is recognized as one of them, and in the
excitement which ensues, Catarina finds herself in danger of
discovery, from which she is rescued by Diana, who promises Don
Henrique she will send her away in the Count's carriage if he will
agree to refuse to sign the marriage contract. He consents, and she
departs upon her errand. At this point in the scene Don Henrique sings
the beautiful ballad, "Oh, whisper what thou feelest!" originally
written for Mr. Harrison. This song leads up to a stirring finale, in
which Don Henrique refuses to sign the contract and Catarina makes her
escape.

The last act opens in the anteroom of the royal palace at Lisbon,
where Diana is waiting for an audience with the Queen. She sings
another interpolated air, originally written for Louisa Pyne ("When
Doubt the tortured Frame is rending"), and at its close the Count, Don
Henrique, and Don Sebastian enter. While they are conversing,
Rebolledo appears, announced as the Count Fuentes, and a quintet
occurs, very slightly constructed, but full of humor. An usher
interrupts it by announcing the Queen will have a private audience
with the Count Fuentes. While awaiting her, the latter, in a
monologue, lets us into the secret that the real crown jewels have
been pledged for the national debt, and that he has been employed to
make duplicates of them to be worn on state occasions until the real
ones can be redeemed. The Queen ente