At night, Itulbo warns the strangers not to reveal that they are the pirates who have been pursued by Ernesto. Meanwhile, Imogene is strangely fascinated by the mysterious stranger who enters covered in a cloak. He soon reveals to her who he really is. Gualtiero learns that she had married Ernesto only because he had threatened her father's life. (Extended duet, first Gualtiero: "Pietosa al padre! e meco / eri si cruda intanto!" / "Pity for your father! But you / were so cruel to me! / And I, deceived and blind, lived, / lived for you alone!"; then Imogene: "Ah! qui d'un padre antico / tu non tremasti accanto" / "Ah, you never trembled / for an aged father). When Imogene's ladies bring her son into the room, he is angry and almost removes his dagger from his belt, before handing the boy back. He then leaves.