Calm is restored at the approach of Alvise Badoero, a member of the Venetian Inquisition, and his wife, Laura. Laura places La Cieca under her personal protection, and in gratitude the old woman presents her with her most treasured possession, a rosary. The sharp-eyed Barnaba notices furtive behaviour between Laura and the sea captain indicating a secret relationship. Recalling that Laura was engaged to the now banished nobleman Enzo Grimaldo before her forced marriage to Alvise, Barnaba realises that the sea captain is Enzo in disguise.